It will take you about half an hour to walk (walk ) there.为什么用to walk?,是动词不定式什么用法?

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It will take you about half an hour to walk (walk ) there.为什么用to walk?,是动词不定式什么用法?

It will take you about half an hour to walk (walk ) there.为什么用to walk?,是动词不定式什么用法?
It will take you about half an hour to walk (walk ) there.为什么用to walk?,是动词不定式什么用法?

It will take you about half an hour to walk (walk ) there.为什么用to walk?,是动词不定式什么用法?
it作形式主语,to do不定式是真正的主语.

it take sb ...to do sth这个是个固定的结构,表示花某人(时间/钱/精力)做某事

这里用的是It takes sb some time to do sth.花费某人多少时间做某事,是固定句型。
属于动词不定式作主语。
希望能帮到你,祝你开心。

动词不定式。套用语法It takes sb st todo sth……完形填空大多都套用的是固定语法