need doing 和need to be done 的区别单选题:it is a question that really_A____.A.don't need answering B.needn't to be answered为什么不可以选B 我在网上搜过 need doing 和need to be done是一样的 打错了 don‘t 是doesn't
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need doing 和need to be done 的区别
单选题:it is a question that really_A____.
A.don't need answering B.needn't to be answered
为什么不可以选B 我在网上搜过 need doing 和need to be done是一样的
打错了 don‘t 是doesn't
need doing 和 need to be done 中,need 是实义动词,need 作为实义动词时不可以与 not 直接连用,再接动词时要接非谓语动词,即:作为实义动词 needn't 不存在,所以原句中B答案 needn't to be answered 要么是 needn't be answered,要么就是 doesn't need to be answered.
另外,如果句子后面用 by 短语附带“由某人去完成”时,通常用 need to be done.例如 :
The door needs to be painted by a skilled worker. (这句不可用 need doing)
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