涉及非谓语动词用法的选择题

— Why did you call him up in advance?

— _____ sure that he was at home.

A. To make

B. Make

C. Making

D. Having made

请问选哪个？为什么？

答案选A（To make）。这是一个简略回答，原句为：

I called him up in advance to make sure that he was at home.

这里的动词不定式是目的状语，对这类状语提问通常用疑问词why。又如：

He went to town to see his sister.（对划线部分提问）

→Why did he go to town?

▲还可以用以下形式提问：

What did he go to town for?

曾克辉 -

擅长：英语考试 | 采纳率 54% | 回答于 1秒前

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