legouithameur رئيس حكومة المنتدى
عدد الرسائل : 1146 العمر : 61 تاريخ التسجيل : 25/02/2008
| موضوع: Must: Form and Use /Lesson السبت مارس 15, 2008 4:16 pm | |
| Must We often use must to say that something is essential or necessary, for example: Structure of MustMust is a modal auxiliary verb. It is followed by a main verb. The structure is: subject + must + main verb The main verb is the base verb (infinitive without "to"). Look at these examples: | Like all auxiliary verbs, must CANNOT be followed by to. So, we say:
- I must go now. (not *I must to go now.)
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subjectauxiliary mustmain verb I | mustgohome. | You | mustvisitus. | We | muststopnow. | Use of MustIn general, must expresses personal obligation. Must expresses what the speaker thinks is necessary. Must is subjective. Look at these examples: | It is sometimes possible to use must for real obligation, for example a rule or a law. But generally we use have to for this. |
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- I must stop smoking.
- You must visit us soon.
- He must work harder.
In each of the above cases, the "obligation" is the opinion or idea of the person speaking. In fact, it is not a real obligation. It is not imposed from outside. We can use must to talk about the present or the future. Look at these examples:
- I must go now. (present)
- I must call my mother tomorrow. (future)
We cannot use must to talk about the past. We use have to to talk about the past. | |
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