some warm-blooded animals ( )hibernate.

问题描述:

some warm-blooded animals ( )hibernate.
1.need not
2.does not need
3.not need
4.do not need
1-11

选A,need在否定句和疑问句是情态动词,后直接加not再加动词原形,所以是need not.在肯定句中是实义动词,要借助助动词do的各种形式来变否定,结合本题应是do not再加动词原形.