شرح قاعدة must / have to / need (to) / can’t ثالث متوسط

شرحنا في الدرس السابق can / could / may / will / would
ملاحظة: الموضوع غير مكتمل - جاري إعداد الموضوع
نشرح في هذا الدرس must / have to / need (to) / can’t

• We use must and have to to express obligation.

I must buy Todd a present for his graduation.

You have to be at work by 8:30.

• We use need to to express necessity.

I need to talk to you.

• We use don’t have to, don’t need to and needn’t to express lack of necessity/obligation.

You don’t have to go out with them if you don’t like them.

You don’t need to give me back the money.

She needn’t buy me a present.

• We use mustn’t and can’t to express prohibition.

You mustn’t/can’t speak during the lesson.

NOTE : • To express obligation in the past, we use had to.

• To express obligation in the future, we use will have to.

Need means that something is necessary. It is used:

• as a main verb in all tenses, in the affirmative, negative and question form. It is followed by a

full infinitive and forms the negative and question form with auxiliary verbs.

• as a modal verb only in the negative and question form of the Present Simple. It is

followed by a bare infinitive and forms the negative and question form without auxiliary

verbs.

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