we don't need to have too much fruit for .为什么用don't need to

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wedon''tneedtohavetoomuchfruitfor.为什么用don''tneedtowedon''tneedtohavetoomuchfruitfor.为什么用don''tneedtowedo

we don't need to have too much fruit for .为什么用don't need to
we don't need to have too much fruit for .为什么用don't need to

we don't need to have too much fruit for .为什么用don't need to
don't need to do sth= needn't do sth不必(前者是实意动词的用法,后者是情态动词的用法)
need to do sth 需要做某事
need 只有作为情态动词时,后面才接动词原形