问题标题:
【need的过去式还是need吗】
问题描述:

need的过去式还是need吗

李昆仑回答:
  是   need做情态动词时没有时态的变化,过去式也是need.后面接动词原形.如:   Ineedwritealetteryesterday.   Needheansweritthen?   Yes,heneed.   No,heneedn't.   情态动词need表示对过去的推测时常和现在完成时连用.如:   Youneedn'thavehurried.你当时不必这么匆忙.   need做实义动词(行为动词)时,过去式是needed.后面接todo.如:   Ineededtowritealetteryesterday.   Didheneedtoansweritthen?   Yes,hedid.   No,hedidn't.
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