unit33 - Unit 33 MUST AND SHOULD MUST Must and should are...

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Unformatted text preview: Unit 33: MUST AND SHOULD MUST Must and should are modal verbs. Unit 27 shows you how to make correct sentences with them. This unit shows you when to use them. They have the same kinds of meaning, but must is always stronger than should. 1 Commands (must only) must You must not leave the room until I say. Parking permits must be displayed in car windows. 2 a b Advice or necessity general present and future time You shouldn’t ever cross the road without looking. Do you think we should take our coats? Yes, you must; it might be very cold. I’m afraid we really must go now. c past time (should only) You shouldn’t have been rude. It was bad of you. They should have told him. Why didn’t they? NOTICE: We can also use have to / need to / needn’t (Unit 34) and sometimes would (Unit 32) for advice and necessity. The meanings of all the verbs are a little different from each other (Unit 35). 3 a Probability general (must or have got to to) It must be terrible to be in an earthquake. It has got to be terrible to be in an earthquake. (I have not been in one but I feel sure.) This isn’t my bill. There must be some mistake. This isn’t my bill. There has got to be some mistake. (I am sure there is a mistake.) I must be dreaming. He should be in his office. (I can’t believe it.) (He is probably there.) b now c future time Don’t worry. You shouldn’t have any problems. (I don’t think you will have problems.) I can’t see them anywhere. They must have gone home. (I feel sure that they have gone home.) I saw them just now. They can’t have gone home. (I feel sure they have not gone home.) d past time (must only) BUT For strong negative probability, use can’t (Unit 28). NOTICE: Ought to (Unit 36) means the same as should. ...
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unit33 - Unit 33 MUST AND SHOULD MUST Must and should are...

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