MUST AND HAVE TO...
You must study You have to exercise
We use MUST and HAVE TO to say that it is necessary to do something. Sometimes, it doesn´t matter which you use:
* It is later than I thought I must go or I have to go.
But, there is a difference between must and have to and sometimes this is important.
If you are not sure which to use, it is usually safer to use HAVE TO.
You can use must to talk about the present or future, but not the past.
* We must go now.
You can use have to in all forms.
* I had to go to hospital (past).
Must and don´t have to are completely different.
You must study You have to exercise
We use MUST and HAVE TO to say that it is necessary to do something. Sometimes, it doesn´t matter which you use:
* It is later than I thought I must go or I have to go.
But, there is a difference between must and have to and sometimes this is important.
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Must is personal. We use must when we
give our personal feelings.
You must do something.
I (the speaker) say it is necessary.
She is a really nice person. You must
meet her
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Have to is impersonal. We use have to for
facts, not for our feelings.
You have to do
something because of a rule or a situation.
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You can´t turn right here. You have to turn left (because of the traffic system).
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If you are not sure which to use, it is usually safer to use HAVE TO.
You can use must to talk about the present or future, but not the past.
* We must go now.
You can use have to in all forms.
* I had to go to hospital (past).
Must and don´t have to are completely different.
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You mustn´t do
something= it is necessary that you do not do it (so, don´t do it).
You must keep it a
secret. You mustn´t tell anyone.
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You don´t have to do
something= you don´t need to do it (but you can if you want).
I am not working
tomorrow, so I don´t have to get up early.
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ACTIVITIES
https://www.learnamericanenglishonline.com/Listening_Lab/Listening_Lab_Exercise_27_modal_verbs.html
