UC知道He doesn't do his homework every day.-His homework__by him every day.
来源：百度知道 编辑：UC知道 时间：2024/06/21 14:25:09
A.doesn't be done B.isn't done
为什么选B?
为什么选B?
整个句子的中文语义大概是：他每天都没有做他的家庭作业，他的家庭作业每天都不被做。从中文语义可以知道是被动语态，关键是“By”，中文是“被”的意思，所以要用被动的，所以是Be加上过去分词。家庭作业是第三人称单数，所以是is的否定式。A语态上有问题，不用考虑。
作业是被作，当是被动语态，所以当然是isn't to be done .B了…
助动词do,does 的否定形式don't, doesn't用在实义动词前构成否定，所以A形式是错的
do 是助动词，没有实际的意思不可和系动词连用。
这里的homework 是被动语态与后面的do是动宾关系
所以选b
A语法就有问题，就没这说法
被动语态 be的被动done.助动词do,does 的否定形式don't, doesn't在实义动词前构成否定,所以选B
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