Share FCE1 - Grammar: Obligation and necessity
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Fill in the blank with the correct form of MUST or HAVE TO. The monitors ---- be cleaned before leaving every night. That's number 1 rule.
have to / We use 'have to' for facts. 'You have to do something' because of a rule or the situation.
Fill in the blank with must, mustn't, have / has (not) , needn't. Those who finish their exam ---- start making noise.
mustn't / You mustn't do something = it is necessary that you do not do it.
Complete the sentences with MUST or HAVE TO in the correct form. When you come to London again, you ----- some and see us.
must / MUST is personal. We use 'must' when we give our personal feelings.
Fill in the blank with affirmative or negative forms of must or have to. I can give you my car, so you --- buy a new one.
don't have to / You don't have to do something = you don't need to do it (but you can if you want)
Complete the sentences with MUST or HAVE TO in the correct form. I'm sorry I couldn't come yesterday. I ---- work late.
had to / HAVE TO is impersonal. We use HAVE TO for facts, not your personal feelings. 'You have to do something because of a rule or situation'
Fill in the blank with the correct form of MUSTN'T or DON'T HAVE TO. He ---- wear a suit to work but he usually does.
doesn't have to / You don't have to do something = you don't need to do it (but you can if you want)
Fill in the blank with MUST or HAVE TO. She's a really nice person. You ----- meet her.
must / The speaker says it is necessary. MUST is personal.
Fill in the blank with the correct form of MUST or HAVE TO. I'm afraid I can't come tomorrow. I ----- work late.
'll have to / must / Sometimes it's possible to use either. In this case it's both a personal decision and a rule.
Make a question with HAVE TO. I had to go to the hospital last week. Why ------ ?
did you have to go to the hospital?
Fill in the blank with MUSTN'T or DON'T/DOESN'T HAVE TO. I don't want anyone to know. You ----- tell anyone.
mustn't / It is necessary that you do not do it.
Fill in the blank with the appropriate form of MUST, HAVE TO or NEED TO. It was her day off the day before yesterday, that's why she ---- up so early. WAKE
didn't need to wake / DIDN'T NEED TO + INFINITIVE means that the action was not necessary and the person did not do it.
Fill in the blank with the appropriate form of MUST, HAVE TO or NEED TO. I ------ to go into the gallery. It was free. PAY
didn't need to pay / DIDN'T NEED TO + INFINITIVE means that the action was not necessary and the person did not do it.
Fill in the black with DIDN'T NEED TO or NEEDN'T HAVE. You ------ the dishes. I would've put them in the dishwasher. (WASH)
needn't have washed / When we say that someone needn't have done something, it means that they did it, but it was not necessary.
Fill in the black with DIDN'T NEED TO or NEEDN'T HAVE. The sun came out so we ------- any rainwear on the trip. (TAKE)
didn't need to take / We use didn't need to to say that something was not necessary under circumstances where it was not done.
Is it possible to complete this sentence with either needn't or don't need to? You -------- (water) the garden this evening. It's going to rain tonight.
don't need to water or needn't water / We can use both needn't and don't need to to give permission to someone not to do something in the immediate future.
Complete the sentence with didn't need to or needn't have + verbs in the correct form. Jane didn't sign the document, but that was OK because she ---- it. SIGN
didn't need to sign / DIDN'T NEED TO + INFINITIVE means that the action was not necessary and the person did not do it.
