2021-12-20

情态动词

的问与答

提问词          肯定回答      否定回答

can 能 可以        can            can't

could  可能          can          can't

may 可能  能  can  may  can't mustn't

need 需要              must        needn't/

must必须                                /don't

                                            /  have to

【例句】

Must I leave now? It's still raining hard outside.

——No, you don't have to *. You can wait still the rain stops.

【例句】

Need I clean my bedroom now?

——Yes, you must.

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