高手们帮忙解答一道有关need的专四英语选择题There being no cause for alarm,you ___in such a panic yesterday.A.need not have acted B.did not need to act C.did not need to have actednot need句型?

问题描述:

高手们帮忙解答一道有关need的专四英语选择题
There being no cause for alarm,you ___in such a panic yesterday.
A.need not have acted
B.did not need to act
C.did not need to have acted
not need句型?

不知道,我感觉从句法上讲,B也是完全正确的
There being 是什么结构? There was不行吗?

用作完成时态的时候一般不用你说的句型的

是这样的,need有情态动词和实意动词两种。情态动词后直接加动词原型,如原体。实意动词的用法:need doing sth ,need to be done .只有这两种。其它都是错的。如你所用,do not need 就是十一动词的用法。符合规则就可以得。

agree with you

一般不用do not need这种句型.need在否定或是疑问句中一般自己作为助动词,不需要加其他的助动词.