{"id":51846,"date":"2026-07-05T09:37:10","date_gmt":"2026-07-05T09:37:10","guid":{"rendered":"https:\/\/live-english.net\/?page_id=51846"},"modified":"2026-07-05T09:43:22","modified_gmt":"2026-07-05T09:43:22","slug":"modal-substitutes","status":"publish","type":"page","link":"https:\/\/live-english.net\/es\/centro-aprendizaje-ingles\/gramatica-inglesa\/modal-substitutes\/","title":{"rendered":"Los modal substitutes en ingl\u00e9s"},"content":{"rendered":"<div class=\"le-learn\">\n<style>\n  body{background:#fff !important;}\n  #primary,#content,#main,.entry-content,article,.site-content,.elementor{background:#fff !important;}\n  .le-learn{font-family:\"Montserrat\",-apple-system,\"Segoe UI\",Roboto,sans-serif;color:#222;line-height:1.6;max-width:820px;margin:0 auto;background:#fff;padding:50px 28px 12px;border-radius:0;}\n  .le-learn h1{font-size:30px;line-height:1.25;color:#023E8A;margin:0 0 16px;}\n  .le-learn h2{font-size:23px;color:#023E8A;margin:40px 0 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.le-struct{display:inline-block;background:#FFF1E0;color:#C45300;border-radius:6px;padding:3px 9px;font-size:13px;font-weight:600;margin-bottom:8px;}\n  .le-card ul{margin:8px 0 0;padding-left:18px;}\n  .le-note{background:#FFF8EC;border:1px solid #f3e2c0;border-left:5px solid #F7941D;border-radius:8px;padding:16px 20px;margin:18px 0;}\n  .le-note p{margin:0 0 8px;}\n  .le-note p:last-child{margin:0;}\n  .le-cta{background:#EAF2FB;border:1px solid #cfe0f5;border-left:5px solid #023E8A;border-radius:10px;padding:20px 22px;margin:26px 0;}\n  .le-cta p{margin:0 0 14px;font-size:16px;}\n  .le-btn{display:inline-block;background:#F7941D;color:#fff !important;text-decoration:none;font-weight:700;font-size:15px;padding:12px 22px;border-radius:8px;}\n  .le-btn:hover{background:#e07e09;}\n  .le-mistakes{counter-reset:m;list-style:none;padding:0;margin:0;}\n  .le-mistakes li{position:relative;padding:12px 14px 12px 50px;border:1px solid #ECEEF2;border-radius:8px;margin-bottom:10px;background:#fff;}\n  .le-mistakes li:before{counter-increment:m;content:counter(m);position:absolute;left:14px;top:12px;width:24px;height:24px;background:#023E8A;color:#fff;border-radius:50%;text-align:center;line-height:24px;font-size:13px;font-weight:700;}\n  .le-embed{position:relative;padding-bottom:62%;height:0;overflow:hidden;border-radius:10px;margin:6px 0 22px;box-shadow:0 2px 12px rgba(2,62,138,.08);background:#F8FAFC;}\n  .le-embed iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0;}\n  .le-learn details{border:1px solid #ECEEF2;border-radius:8px;margin-bottom:10px;background:#fff;}\n  .le-learn details summary{cursor:pointer;padding:14px 16px;font-weight:600;color:#023E8A;list-style:none;}\n  .le-learn details summary::-webkit-details-marker{display:none;}\n  .le-learn details summary:after{content:\"+\";float:right;font-size:20px;line-height:1;color:#F7941D;}\n  .le-learn details[open] summary:after{content:\"\\2013\";}\n  .le-learn details .le-ans{padding:0 16px 16px;}\n  .le-takeaways{background:#F8FAFC;border:1px solid #ECEEF2;border-radius:10px;padding:18px 22px 18px 38px;}\n  .le-takeaways li{margin:6px 0;}\n  .le-keep{padding-left:18px;}\n  .le-eeat{font-size:14px;color:#555;font-style:italic;border-top:1px solid #ECEEF2;padding-top:16px;margin-top:30px;}\n  @media(max-width:640px){\n    .le-learn{padding:40px 16px 8px;border-radius:0;}\n    .le-trust{flex-wrap:wrap;white-space:normal;font-size:12px;gap:6px;}\n    .le-learn h1{font-size:25px;}\n    .le-toc ul{columns:1;}\n    .le-cards{grid-template-columns:1fr;}\n  }\n<\/style>\n<h1>Los modal substitutes en ingl\u00e9s: c\u00f3mo usarlos<\/h1>\n<div class=\"le-trust\"><span><b>10,000+<\/b> profesionales formados<\/span><span class=\"le-sep\">&bull;<\/span><span>desde <b>2007<\/b><\/span><span class=\"le-sep\">&bull;<\/span><span><b>4.9\/5<\/b> de valoraci\u00f3n<\/span><span class=\"le-sep\">&bull;<\/span><span>profesores nativos con experiencia<\/span><span class=\"le-sep\">&bull;<\/span><span>prueba gratis, <b>sin tarjeta<\/b><\/span><\/div>\n<p>Los <em>modal substitutes<\/em> son palabras o expresiones que sustituyen a un verbo modal para expresar la misma idea en tiempos y formas que los modales no tienen. Por ejemplo, <span class=\"le-en\">must<\/span> no tiene pasado ni futuro, as\u00ed que se usa <strong>have to<\/strong>: \u00ab I <strong>had to<\/strong> leave \u00bb, \u00ab I <strong>will have to<\/strong> leave. \u00bb<\/p>\n<p>Esta gu\u00eda es para los niveles B1 a B2 que quieren expresar correctamente obligaci\u00f3n, capacidad y permiso en todos los tiempos. Al final conocer\u00e1s los principales sustitutos, cu\u00e1ndo usar cada uno, las diferencias de significado que importan (<span class=\"le-en\">must vs have to<\/span>, <span class=\"le-en\">don&#8217;t have to vs mustn&#8217;t<\/span>) y los errores que evitar. En esta p\u00e1gina hay tres ejercicios.<\/p>\n<div class=\"le-toc\"><strong>En esta p\u00e1gina<\/strong><\/p>\n<ul>\n<li><a href=\"#ms-video\">Resumen en v\u00eddeo<\/a><\/li>\n<li><a href=\"#ms-what\">Qu\u00e9 son los modal substitutes<\/a><\/li>\n<li><a href=\"#ms-table\">Los principales sustitutos<\/a><\/li>\n<li><a href=\"#ms-detail\">Cada sustituto en detalle<\/a><\/li>\n<li><a href=\"#ms-must\">Must vs have to<\/a><\/li>\n<li><a href=\"#ms-could\">Could vs was able to<\/a><\/li>\n<li><a href=\"#ms-dont\">Don&#8217;t have to vs mustn&#8217;t<\/a><\/li>\n<li><a href=\"#ms-mistakes\">Errores comunes<\/a><\/li>\n<li><a href=\"#ms-practice\">Ejercicios<\/a><\/li>\n<li><a href=\"#ms-faq\">FAQ<\/a><\/li>\n<li><a href=\"#ms-takeaways\">Puntos clave<\/a><\/li>\n<\/ul>\n<\/div>\n<h2 id=\"ms-video\">Un breve resumen en v\u00eddeo<\/h2>\n<div class=\"le-video\"><iframe src=\"https:\/\/www.youtube.com\/embed\/PIB8O0n_wrM\" title=\"Modal substitutes in English\" loading=\"lazy\" allowfullscreen><\/iframe><\/div>\n<h2 id=\"ms-what\">Qu\u00e9 son los modal substitutes<\/h2>\n<p>Los verbos modales como <span class=\"le-en\">must, can, may<\/span> y <span class=\"le-en\">should<\/span> son \u00fatiles, pero tienen un problema: no se conjugan en todos los tiempos. <span class=\"le-en\">Must<\/span> no tiene pasado ni futuro, <span class=\"le-en\">can<\/span> no tiene infinitivo y <span class=\"le-en\">may<\/span> no tiene forma perfecta. Cuando necesitas esas formas, usas un modal substitute: una expresi\u00f3n con el mismo significado que se comporta como un verbo normal, as\u00ed que funciona en cualquier tiempo.<\/p>\n<p>Por ejemplo, no se puede decir \u00ab I will must go \u00bb. Se usa el sustituto: \u00ab I <strong>will have to<\/strong> go. \u00bb Esa es toda la raz\u00f3n de ser de los modal substitutes.<\/p>\n<h2 id=\"ms-table\">Los principales modal substitutes<\/h2>\n<p>Estos son los sustitutos m\u00e1s frecuentes. La columna de ejemplo muestra un tiempo que el modal en s\u00ed no puede formar.<\/p>\n<div class=\"le-table-scroll\">\n<table class=\"le-tbl\">\n<thead>\n<tr>\n<th>Verbo modal<\/th>\n<th>Significado<\/th>\n<th>Sustituto<\/th>\n<th>Ejemplo (tiempo imposible para el modal)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>MUST<\/td>\n<td>obligaci\u00f3n, necesidad<\/td>\n<td>have to, need to<\/td>\n<td>I <strong>had to<\/strong> work late. \/ You <strong>will have to<\/strong> wait.<\/td>\n<\/tr>\n<tr>\n<td>CAN<\/td>\n<td>capacidad<\/td>\n<td>be able to<\/td>\n<td>She <strong>has been able to<\/strong> drive since May.<\/td>\n<\/tr>\n<tr>\n<td>MAY \/ CAN<\/td>\n<td>permiso<\/td>\n<td>be allowed to<\/td>\n<td>We <strong>were allowed to<\/strong> leave early.<\/td>\n<\/tr>\n<tr>\n<td>SHALL \/ SHOULD<\/td>\n<td>expectativa, consejo<\/td>\n<td>be supposed to, be expected to<\/td>\n<td>You <strong>were supposed to<\/strong> call me.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"le-cta\">\n<p><strong>Los sustitutos parecen simples y en la pr\u00e1ctica confunden.<\/strong> Elegir el correcto en el tiempo correcto, al hablar, requiere repetici\u00f3n. Reserva una clase de prueba gratuita y practica con un profesor nativo con experiencia, sin tarjeta.<\/p>\n<p><a class=\"le-btn\" href=\"https:\/\/member.booknstart.com\/trial-registration?lg=es&#038;referred_by=grammar-modal-substitutes&#038;office_id=3\" target=\"_blank\" rel=\"noopener\">Reservar mi clase de prueba gratis<\/a><\/div>\n<h2 id=\"ms-detail\">Cada sustituto en detalle<\/h2>\n<div class=\"le-cards\">\n<div class=\"le-card\">\n<h3>HAVE TO \/ NEED TO = must<\/h3>\n<p><span class=\"le-struct\">obligaci\u00f3n, necesidad<\/span><\/p>\n<p>Usa have to o need to para la obligaci\u00f3n en los tiempos en que must no funciona.<\/p>\n<ul>\n<li>Past: I <strong>had to<\/strong> retake the exam.<\/li>\n<li>Future: We <strong>will have to<\/strong> book early.<\/li>\n<\/ul>\n<\/div>\n<div class=\"le-card\">\n<h3>BE ABLE TO = can (ability)<\/h3>\n<p><span class=\"le-struct\">capacidad<\/span><\/p>\n<p>Usa be able to para la capacidad en pasado, futuro, perfecto e infinitivo.<\/p>\n<ul>\n<li>Future: I <strong>will be able to<\/strong> help tomorrow.<\/li>\n<li>Perfect: He <strong>has been able to<\/strong> swim for years.<\/li>\n<\/ul>\n<\/div>\n<div class=\"le-card\">\n<h3>BE ALLOWED TO = may \/ can (permission)<\/h3>\n<p><span class=\"le-struct\">permiso<\/span><\/p>\n<p>Usa be allowed to para el permiso en cualquier tiempo.<\/p>\n<ul>\n<li>Past: We <strong>were allowed to<\/strong> go home.<\/li>\n<li>Future: You <strong>will be allowed to<\/strong> vote at 18.<\/li>\n<\/ul>\n<\/div>\n<div class=\"le-card\">\n<h3>BE SUPPOSED TO \/ BE EXPECTED TO = should<\/h3>\n<p><span class=\"le-struct\">expectativa, consejo<\/span><\/p>\n<p>Usa estas formas para lo que se espera o est\u00e1 previsto, en cualquier tiempo.<\/p>\n<ul>\n<li>Present: You <strong>are supposed to<\/strong> wear a badge.<\/li>\n<li>Past: She <strong>was expected to<\/strong> arrive at noon.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2 id=\"ms-must\">Must vs have to: una diferencia peque\u00f1a pero real<\/h2>\n<p>En presente, <span class=\"le-en\">must<\/span> y <span class=\"le-en\">have to<\/span> expresan ambos obligaci\u00f3n, pero la fuente es distinta. <span class=\"le-en\"><strong>Must<\/strong><\/span> suele indicar que la obligaci\u00f3n viene del hablante (un sentimiento personal). <span class=\"le-en\"><strong>Have to<\/strong><\/span> suele indicar que viene de fuera (una regla, una ley, otra persona).<\/p>\n<div class=\"le-table-scroll\">\n<table class=\"le-tbl\">\n<thead>\n<tr>\n<th>Oraci\u00f3n<\/th>\n<th>De d\u00f3nde viene la obligaci\u00f3n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>I <strong>must<\/strong> call my mother tonight.<\/td>\n<td>Personal. Siento que deber\u00eda.<\/td>\n<\/tr>\n<tr>\n<td>I <strong>have to<\/strong> wear a uniform at work.<\/td>\n<td>Externa. Es una norma de la empresa.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>En pasado y futuro no hay elecci\u00f3n: must no tiene pasado ni futuro, as\u00ed que siempre se usan had to y will have to.<\/p>\n<h2 id=\"ms-could\">Could vs was able to: la capacidad en el pasado<\/h2>\n<p>Para una capacidad general en el pasado, valen <span class=\"le-en\">could<\/span> y <span class=\"le-en\">was\/were able to<\/span>: \u00ab I <strong>could<\/strong> swim when I was five \u00bb o \u00ab I <strong>was able to<\/strong> swim when I was five. \u00bb Pero para algo concreto que lograste una vez, usa <span class=\"le-en\"><strong>was\/were able to<\/strong><\/span>, no could.<\/p>\n<div class=\"le-table-scroll\">\n<table class=\"le-tbl\">\n<thead>\n<tr>\n<th>Situaci\u00f3n<\/th>\n<th>Forma correcta<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Capacidad general en el pasado<\/td>\n<td>I <strong>could<\/strong> read music as a child. (or was able to)<\/td>\n<\/tr>\n<tr>\n<td>Un \u00e9xito concreto<\/td>\n<td>After an hour, I <strong>was able to<\/strong> fix it. (not \u00abI could fix it\u00bb)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 id=\"ms-dont\">Don&#8217;t have to vs mustn&#8217;t: no los confundas<\/h2>\n<p>Estos dos se parecen pero significan lo contrario.<\/p>\n<div class=\"le-note\">\n<p><strong>Don&#8217;t have to<\/strong> significa que no es necesario. Puedes hacerlo si quieres, pero no tienes que hacerlo.<\/p>\n<p>You <strong>don&#8217;t have to<\/strong> bring a towel, the hotel provides them.<\/p>\n<p><strong>Mustn&#8217;t<\/strong> significa que est\u00e1 prohibido. No lo hagas.<\/p>\n<p>You <strong>mustn&#8217;t<\/strong> park there, it is for emergency vehicles only.<\/p>\n<\/div>\n<h2 id=\"ms-mistakes\">Errores comunes con los modal substitutes<\/h2>\n<ol class=\"le-mistakes\">\n<li><strong>Poner dos modales juntos.<\/strong> Incorrecto: <span class=\"le-en\">I will can help.<\/span> Correcto: <span class=\"le-en\">I <strong>will be able to<\/strong> help.<\/span> Usa el sustituto en lugar de un segundo modal.<\/li>\n<li><strong>Usar \u00ab must \u00bb en pasado.<\/strong> Incorrecto: <span class=\"le-en\">Yesterday I must work.<\/span> Correcto: <span class=\"le-en\">Yesterday I <strong>had to<\/strong> work.<\/span><\/li>\n<li><strong>Confundir don&#8217;t have to y mustn&#8217;t.<\/strong> <span class=\"le-en\">You don&#8217;t have to<\/span> es opcional; <span class=\"le-en\">you mustn&#8217;t<\/span> est\u00e1 prohibido. No son lo mismo.<\/li>\n<li><strong>Usar \u00ab could \u00bb para un \u00e9xito concreto en pasado.<\/strong> Incorrecto: <span class=\"le-en\">The door was stuck but I could open it.<\/span> Correcto: <span class=\"le-en\">I <strong>was able to<\/strong> open it.<\/span><\/li>\n<\/ol>\n<h2 id=\"ms-practice\">Ejercicios sobre los modal substitutes<\/h2>\n<p id=\"ex1\" style=\"scroll-margin-top:90px;\"><strong>Ejercicio 1.<\/strong> Elige el modal substitute correcto para completar la oraci\u00f3n.<\/p>\n<div class=\"le-embed\"><iframe src=\"https:\/\/learningapps.org\/watch?v=pabccyuek23\" title=\"Modal substitutes exercise\" loading=\"lazy\" allowfullscreen><\/iframe><\/div>\n<p id=\"ex2\" style=\"scroll-margin-top:90px;\"><strong>Ejercicio 2.<\/strong> Completa las oraciones con el sustituto correcto en el tiempo correcto.<\/p>\n<div class=\"le-embed\"><iframe src=\"https:\/\/learningapps.org\/watch?v=ptrvvj5nt23\" title=\"Modal substitutes exercise\" loading=\"lazy\" allowfullscreen><\/iframe><\/div>\n<p id=\"ex3\" style=\"scroll-margin-top:90px;\"><strong>Ejercicio 3.<\/strong> Corrige los errores en las siguientes oraciones.<\/p>\n<div class=\"le-embed\"><iframe src=\"https:\/\/learningapps.org\/watch?v=p9y1bgy8j23\" title=\"Modal substitutes exercise\" loading=\"lazy\" allowfullscreen><\/iframe><\/div>\n<h3>Autocomprobaci\u00f3n r\u00e1pida<\/h3>\n<p>Elige el sustituto y el tiempo correctos y luego muestra las respuestas.<\/p>\n<p>1. Tomorrow I ____ (must) finish the report before noon. <em>(obligaci\u00f3n futura)<\/em><br \/>\n   2. The door was stuck, but after a while she ____ (can) open it. <em>(un \u00e9xito pasado)<\/em><br \/>\n   3. Visitors ____ (may) use the staff car park at weekends. <em>(permiso en presente)<\/em><\/p>\n<details>\n<summary>Mostrar respuestas<\/summary>\n<div class=\"le-ans\">\n<p>1. will have to finish. &nbsp; 2. was able to open it. &nbsp; 3. are allowed to use.<\/p>\n<\/div>\n<\/details>\n<div class=\"le-cta\">\n<p><strong>\u00bfQu\u00e9 tal fue?<\/strong> Reconocer el sustituto correcto en un ejercicio es una cosa. Producirlo en el tiempo correcto al hablar es el objetivo. En una clase de prueba gratuita, un profesor nativo con experiencia te har\u00e1 usarlos en frases reales en pocos minutos.<\/p>\n<p><a class=\"le-btn\" href=\"https:\/\/member.booknstart.com\/trial-registration?lg=es&#038;referred_by=grammar-modal-substitutes&#038;office_id=3\" target=\"_blank\" rel=\"noopener\">Prueba una clase gratis<\/a><\/div>\n<h2 id=\"ms-faq\">Preguntas frecuentes<\/h2>\n<details>\n<summary>\u00bfQu\u00e9 son los modal substitutes?<\/summary>\n<div class=\"le-ans\">Los modal substitutes son palabras o expresiones que sustituyen a un verbo modal para expresar el mismo significado en tiempos y formas que los modales no tienen. Los m\u00e1s comunes son have to (para must), be able to (para can), be allowed to (para el permiso may\/can) y be supposed to (para should).<\/div>\n<\/details>\n<details>\n<summary>\u00bfPor qu\u00e9 usamos modal substitutes?<\/summary>\n<div class=\"le-ans\">Los verbos modales no se conjugan en todos los tiempos. Must no tiene pasado ni futuro, can no tiene infinitivo y may no tiene forma perfecta. Los modal substitutes se comportan como verbos normales: \u00ab I had to go \u00bb, \u00ab I will be able to help \u00bb, \u00ab We were allowed to leave. \u00bb<\/div>\n<\/details>\n<details>\n<summary>\u00bfCu\u00e1l es la diferencia entre must y have to?<\/summary>\n<div class=\"le-ans\">En presente, must suele indicar que la obligaci\u00f3n viene del hablante (un sentimiento personal), mientras que have to viene de fuera, como una regla o una ley. En pasado y futuro no hay elecci\u00f3n: must no tiene pasado ni futuro, as\u00ed que se usan had to y will have to.<\/div>\n<\/details>\n<details>\n<summary>\u00bfCu\u00e1l es la diferencia entre don&#8217;t have to y mustn&#8217;t?<\/summary>\n<div class=\"le-ans\">Don&#8217;t have to significa que algo no es necesario, pero puedes hacerlo si quieres. Mustn&#8217;t significa que algo est\u00e1 prohibido. \u00ab You don&#8217;t have to come \u00bb es opcional; \u00ab you mustn&#8217;t come \u00bb es una prohibici\u00f3n.<\/div>\n<\/details>\n<details>\n<summary>\u00bfC\u00f3mo se habla de la capacidad en el pasado?<\/summary>\n<div class=\"le-ans\">Para una capacidad general en el pasado puedes usar could o was\/were able to. Para algo concreto que lograste una vez, usa was\/were able to, no could: \u00ab After an hour, I was able to fix it \u00bb, no \u00ab I could fix it. \u00bb<\/div>\n<\/details>\n<h2 id=\"ms-takeaways\">Puntos clave<\/h2>\n<ul class=\"le-takeaways\">\n<li>Los modal substitutes permiten usar el significado de los modales en tiempos que ellos no tienen.<\/li>\n<li><span class=\"le-en\">must<\/span> \u2192 <span class=\"le-en\">have to \/ need to<\/span>; <span class=\"le-en\">can<\/span> \u2192 <span class=\"le-en\">be able to<\/span>; permiso <span class=\"le-en\">may\/can<\/span> \u2192 <span class=\"le-en\">be allowed to<\/span>; <span class=\"le-en\">should<\/span> \u2192 <span class=\"le-en\">be supposed to<\/span>.<\/li>\n<li>Nunca pongas dos modales juntos: \u00ab will be able to \u00bb, no \u00ab will can \u00bb.<\/li>\n<li>Must vs have to: obligaci\u00f3n personal vs regla externa.<\/li>\n<li>Don&#8217;t have to (opcional) y mustn&#8217;t (prohibido) son opuestos.<\/li>\n<\/ul>\n<h2>Sigue aprendiendo<\/h2>\n<ul class=\"le-keep\">\n<li><a href=\"https:\/\/live-english.net\/learning\/grammar\/modal-verbs\/\">Los verbos modales en ingl\u00e9s<\/a><\/li>\n<li><a href=\"https:\/\/live-english.net\/learning\/passive-form\/\">La voz pasiva<\/a><\/li>\n<li><a href=\"https:\/\/live-english.net\/learning\/grammar\/let-make-have-get\/\">Verbos causativos: let, make, have y get<\/a><\/li>\n<li><a href=\"https:\/\/live-english.net\/es\/centro-aprendizaje-ingles\/\">M\u00e1s gu\u00edas de gram\u00e1tica inglesa<\/a><\/li>\n<li><a href=\"https:\/\/live-english.net\/english-level-test\/\">Eval\u00faa tu nivel de ingl\u00e9s<\/a><\/li>\n<li><a href=\"https:\/\/live-english.net\/online-english-school\/english-teachers\/\">Conoce a nuestros profesores<\/a><\/li>\n<\/ul>\n<p class=\"le-eeat\">Escrito y revisado por los profesores nativos con experiencia de Live English, en l\u00ednea desde 2007.<\/p>\n<\/div>\n<p><script type=\"application\/ld+json\">\n{ \"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"@id\":\"https:\/\/live-english.net\/es\/centro-aprendizaje-ingles\/gramatica-inglesa\/modal-substitutes\/#faq\",\"inLanguage\":\"es\",\"mainEntity\":[\n    { \"@type\":\"Question\",\"name\":\"\u00bfQu\u00e9 son los modal substitutes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Los modal substitutes son palabras o expresiones que sustituyen a un verbo modal para expresar el mismo significado en tiempos y formas que los modales no tienen. Los m\u00e1s comunes son have to (para must), be able to (para can), be allowed to (para el permiso may\/can) y be supposed to (para should).\"} },\n    { \"@type\":\"Question\",\"name\":\"\u00bfPor qu\u00e9 usamos modal substitutes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Los verbos modales no se conjugan en todos los tiempos. Must no tiene pasado ni futuro, can no tiene infinitivo y may no tiene forma perfecta. Los modal substitutes se comportan como verbos normales: \u00ab I had to go \u00bb, \u00ab I will be able to help \u00bb, \u00ab We were allowed to leave. \u00bb\"} },\n    { \"@type\":\"Question\",\"name\":\"\u00bfCu\u00e1l es la diferencia entre must y have to?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"En presente, must suele indicar que la obligaci\u00f3n viene del hablante (un sentimiento personal), mientras que have to viene de fuera, como una regla o una ley. En pasado y futuro no hay elecci\u00f3n: must no tiene pasado ni futuro, as\u00ed que se usan had to y will have to.\"} },\n    { \"@type\":\"Question\",\"name\":\"\u00bfCu\u00e1l es la diferencia entre don't have to y mustn't?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Don't have to significa que algo no es necesario, pero puedes hacerlo si quieres. Mustn't significa que algo est\u00e1 prohibido. \u00ab You don't have to come \u00bb es opcional; \u00ab you mustn't come \u00bb es una prohibici\u00f3n.\"} },\n    { \"@type\":\"Question\",\"name\":\"\u00bfC\u00f3mo se habla de la capacidad en el pasado?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Para una capacidad general en el pasado puedes usar could o was\/were able to. Para algo concreto que lograste una vez, usa was\/were able to, no could: \u00ab After an hour, I was able to fix it \u00bb, no \u00ab I could fix it. \u00bb\"} }\n]}\n<\/script><br \/>\n<script type=\"application\/ld+json\">\n{ \"@context\":\"https:\/\/schema.org\",\"@type\":[\"Article\",\"LearningResource\"],\"@id\":\"https:\/\/live-english.net\/es\/centro-aprendizaje-ingles\/gramatica-inglesa\/modal-substitutes\/#article\",\"mainEntityOfPage\":\"https:\/\/live-english.net\/es\/centro-aprendizaje-ingles\/gramatica-inglesa\/modal-substitutes\/\",\"url\":\"https:\/\/live-english.net\/es\/centro-aprendizaje-ingles\/gramatica-inglesa\/modal-substitutes\/\",\"headline\":\"Los modal substitutes en ingl\u00e9s: c\u00f3mo usarlos\",\"description\":\"Los modal substitutes en ingl\u00e9s (have to, be able to, be allowed to, be supposed to): cu\u00e1ndo y c\u00f3mo usarlos en cada tiempo, con ejemplos y ejercicios gratis.\",\"inLanguage\":\"es\",\"learningResourceType\":\"Grammar lesson with exercises\",\"educationalLevel\":\"B1 to B2 (CEFR)\",\"about\":{\"@type\":\"Thing\",\"name\":\"English modal substitutes\"},\"audience\":{\"@type\":\"EducationalAudience\",\"educationalRole\":\"student\"},\"author\":{\"@type\":\"EducationalOrganization\",\"@id\":\"https:\/\/live-english.net\/#org\",\"name\":\"Live English\",\"url\":\"https:\/\/live-english.net\/\"},\"publisher\":{\"@type\":\"EducationalOrganization\",\"@id\":\"https:\/\/live-english.net\/#org\",\"name\":\"Live English\",\"url\":\"https:\/\/live-english.net\/\"} }\n<\/script><\/p>\n <aside id=\"custom_html-66\" class=\"widget_text widget widget_custom_html amr_widget\"><div class=\"textwidget custom-html-widget\"><div>\r\n\t<br><br>\r\n<\/div>\r\n<!--EN-->\r\n <!--FR-->\r\n<!--IT-->\r\n<!--DE-->\r\n<aside id=\"custom_html-78\" class=\"widget_text widget widget_custom_html amr_widget\"><div class=\"textwidget custom-html-widget\"><div><a href=\"https:\/\/member.booknstart.com\/trial-registration?lg=es&amp;referred_by=CTA&amp;office_id=3\" title=\"Book a Free Trial Lesson\" target=\"_blank\" rel=\"noopener\"><img alt=\"Book your free English trial lesson\" src='https:\/\/live-english.net\/wp-content\/uploads\/2023\/02\/CTA-prueba.jpg'><\/a>\t\r\n<\/div><\/div><\/aside> <!--ES-->\r\n <!--HE-->\r\n <!--RU--><\/div><\/aside>","protected":false},"excerpt":{"rendered":"<p>Los modal substitutes en ingl\u00e9s: c\u00f3mo usarlos 10,000+ profesionales formados&bull;desde 2007&bull;4.9\/5 de valoraci\u00f3n&bull;profesores nativos con experiencia&bull;prueba gratis, sin tarjeta Los modal substitutes son palabras o expresiones que sustituyen a un verbo modal para expresar la misma idea en tiempos y<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":51582,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-51846","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/pages\/51846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/comments?post=51846"}],"version-history":[{"count":2,"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/pages\/51846\/revisions"}],"predecessor-version":[{"id":51848,"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/pages\/51846\/revisions\/51848"}],"up":[{"embeddable":true,"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/pages\/51582"}],"wp:attachment":[{"href":"https:\/\/live-english.net\/es\/wp-json\/wp\/v2\/media?parent=51846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}