ENGLISH 2A

Have to for obligation and need to for necessity Must', 'have to', and 'need to' in the positive or question form are used to speak about responsibilities, obligations and important actions. I'm having some trouble understanding this. I must ask Peter a few questions. She has to work with clients from all over the world. They need to study more if they want to get good grades. Sometimes, 'must' and 'have to' can be used to speak about responsibilities. However, 'must' is generally used for strong personal obligations and 'have to' is used for responsibilities at work and in everyday life. I must do this right now! I have to file reports every week. 'Don't have to', 'don't need to' and 'mustn't' have very different meanings. 'Don't have to' is used to express that something is not required. 'Don't need to' also expresses that a particular action is ...

should and ought to for advice El  verbo s hould  se utiliza, por lo general, para dar consejos. Lo podríamos parafrasear como “creo que es una buena / mala idea…”: You should talk to her. You shouldn’t waste your money on so many presents. Existe también otro verbo modal,  ought to , que tiene el mismo significado, con una conotación de deber moral: You ought to visit your grandmother more often. You oughtn’t drive so fast. Should  tiene otros valores: 1. Expresar obligación   en contextos formales: All visitors to the building should carry a badge. 2. Expresar una condición posible pero improbable: If anyone should phone / Should anyone phone, I’ll be in my office. 3.   En oraciones subordinadas, después de verbos como  suggest, demand, require, recommed, decide, warn  etc.: The doctor suggested  / recommended that she should stop working for a while. En este caso, el modal es opcional y la fr...

Simple past Para formar el pasado simple con verbos regulares, usamos el infinitivo y añadimos la terminación “ -ed ”. La forma es la misma para todas las personas (I, you, he, she, it, we, they). 9Ejemplos: want →      wanted learn →      learned stay →      stayed walk →      walked show →      showed Excepciones: 1. Para verbos que terminan en una  “e” , sólo añadimos “ -d ”. Ejemplos: change →      changed believe →      believed 2. Si el verbo termina en una vocal corta y una consonante (excepto  “y”  o  “w” ), doblamos la consonante final. Ejemplos: stop →      stopped commit →      committed 3. Con verbos que terminan en una consonante y una  “y” , se cambia la  “y”  por una  “i” . Ejemplos: study →      studied try →      ...