问句 肯定回答 否定回答
Needyou…? Yes,Imust. No,Ineedn't
Mustyou…? /don'thaveto.典型例题
1）---CouldIborrowyourdictionary?
---Yes,ofcourse,you____.
A.might B.will C.can D.should
答案C.could表示委婉的语气，并不为时态。答语中ofcourse，表示肯定的语气，允许某人做某事时，用can和may来表达，不能用could或might。复习：will与you连用，用来提出要求或下命令。should与you连用，用来提出劝告。2）---ShallItellJohnaboutit?
---No,you___.I'vetoldhimalready.
A.needn't B.wouldn't C.mustn't D.shouldn't
答案A。needn't不必，不用。wouldn't将不,不会的。mustn't禁止、不能。shouldn't 不应该。本题为不需要，不必的意思，应用needn't。3）---Don'tforgettocometomybirthdaypartytomorrow.
---______.
A.Idon't B. Iwon't C.Ican't D.Ihaven't
答案B. will既可当作情态动词，表请求、建议、也可作为实义动词表"意愿、意志、决心"，本题表示决心，选B。
