如何区分实意动词和情态动词?就是说在一个句子中,怎样才能知道它是实意动词还是情态动词?如：He need drive his car to work.I needn't buy the book.两个句子中的need 哪一个是情态动词、哪一个是实意动词?你是怎么知道的?

分类: 作业答案 • 2022-01-02 15:52:11

问题描述：

如何区分实意动词和情态动词?
就是说在一个句子中,怎样才能知道它是实意动词还是情态动词?如：He need drive his car to work.
I needn't buy the book.
两个句子中的need 哪一个是情态动词、哪一个是实意动词?你是怎么知道的?

答

need 当情态时，need do sth (肯定)
needn't do sth (否定)

答

I needn't buy… 我不必（情态）买…：（否定need；needn't 或 need not）；i didn't need to buy…谓语动词否定助动词。做情太动词：用在否定，疑问句：一定，必要，need you buy the book？你有必要要买…？

答

都是情态动词
因为这里是 need drive,needn't buy
如果这里是 need to drive,don't need to buy 那就是实意思动词
need如果是实意动词的时候
应该是 need to do sth
need sth