用所给词的适当形式填空.有两个地方不懂.(1)If your homework _(do),you can go out to play.(1)If your homework _(do),you can go out to play. (2) My mother has some clothes_(wash)every morning.我看

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用所给词的适当形式填空.有两个地方不懂.(1)Ifyourhomework_(do),youcangoouttoplay.(1)Ifyourhomework_(do),youcangoouttopla

用所给词的适当形式填空.有两个地方不懂.(1)If your homework _(do),you can go out to play.(1)If your homework _(do),you can go out to play. (2) My mother has some clothes_(wash)every morning.我看
用所给词的适当形式填空.有两个地方不懂.(1)If your homework _(do),you can go out to play.
(1)If your homework _(do),you can go out to play. (2) My mother has some clothes_(wash)every morning.我看了答案,第(1)题是is done .请问为什么不是has done.表示已经完成.have +过去分词不是表示已经完成了吗,is done和has done区别在哪,be动词+过去分词好像是被动语态的结构,那么岂不是翻译成”被完成“,还有第(2)题是to wash,请问为什么用不定式to,是有什么固定结构么?麻烦各位替小生解答,不甚感激!

用所给词的适当形式填空.有两个地方不懂.(1)If your homework _(do),you can go out to play.(1)If your homework _(do),you can go out to play. (2) My mother has some clothes_(wash)every morning.我看
第一题选 is done因为这是个一般现在时的被动语态 is+ done
为什么不用has done?因为这是主动语态,作业当主语应该用被动语态.has been done也说得通的.只是一般都不这么用,if 引导的条件状语从句通常用一般现在时.
第二题当然是句型:have sth done 这里隐含的意思不是自己亲手做某事,而是让别人做某事.
不是妈妈亲手洗的衣服,而是大概洗衣机洗的或者洗衣店洗的.
明白了没?

第一小题应该是一般情况吧所以可以不用完成时 第二小题是固定句式have sth to do .就像make sth do 那样