some warm-blooded animals ( )hibernate.1.need not 2.does not need 3.not need4.do not need1-11

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somewarm-bloodedanimals()hibernate.1.neednot2.doesnotneed3.notneed4.donotneed1-11somewarm-bloodedani

some warm-blooded animals ( )hibernate.1.need not 2.does not need 3.not need4.do not need1-11
some warm-blooded animals ( )hibernate.
1.need not
2.does not need
3.not need
4.do not need
1-11

some warm-blooded animals ( )hibernate.1.need not 2.does not need 3.not need4.do not need1-11
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.

A，因为hibernate是动词，need可以做行为动词也可作情态动词。故有两种形式1，行为动词need:don't need to hibernate；2情态动词need: needn't hibernate。（提示：两个普通动词相连要用不定式to do,而情态动词后直接加动原）