You____tell him the sad news right now.He will soon make a speech at the meeting.You ( ) tell him the sad news right now .He will soon make a speech at the meeting.A.needn't B.needn't to C.don't need D.didn't need
问题描述：
You____tell him the sad news right now.He will soon make a speech at the meeting.
You ( ) tell him the sad news right now .He will soon make a speech at the
meeting.
A.needn't B.needn't to C.don't need D.didn't need
答
A.正确
needn't和didn't need to都可以，用needn't的时候need做情态动词使用，后面不能有to，所以B错误；用做didn't need to的时候，need做普通动词使用，后面要有to，所以C和D都是错误的。
答
A
need 作情态动词，否定形式是 needn't ，后面跟动词原形。
如果need 作实意动词，应该是 don't need to
答
荅案选A need是情态动词,不需要跟一般的动词一样,否定句中常说needn't
答
B.needn't to