need的过去式还是need吗
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need的过去式还是need吗
![need的过去式还是need吗](/uploads/image/z/2660687-71-7.jpg?t=need%E7%9A%84%E8%BF%87%E5%8E%BB%E5%BC%8F%E8%BF%98%E6%98%AFneed%E5%90%97)
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.
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.