题目:
need的过去式还是need吗
解答:
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:I need write a letter yesterday.Need he answer it then?Yes, he need.No, he needn"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:You needn"t have hurried.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to do.如:I needed to write a letter yesterday.Did he need to answer it then?Yes, he did.No, he didn"t.
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