Remember we use ''can'' and ''be able to'' to talk about ability or possibility.
''I can/am able to do what I like at work''
''be supposed to'' is to day what people expect you to do
''I am supposed to teach you all English''
''can'' and ''be allowed to'' means I have permission to do something.
''I can't use bad words in class but I am allowed to use a little Polish.''
''must'' and ''have to'' is used to say I have no choice.
''I must/have to start work at 4 oçlock''
''ought to'' and ''should'' are used to give advice
''You should/ought to go to bed early if you have an important meeting the next day''
We use ''mustn't'' to say something is not allowed
''You mustn't smoke in the school''
but ''don't have to'' to say you have a choice
''You don't have to dress smart for lesson'' (but you can if you want!)
Remember all these expressions are followed by the infinitive form of the verb.
No comments:
Post a Comment