He was typing so fast that I couldn't believe he was blind.请
6个回答

这是一个结果状语从句.

他打字打得如此之快以至于我不相信他是看不见的.

so+adj./adv.+that

或者such+n.+that

构成结果状语从句

so…that与 such…that之间的转换既为 so与such之间的转换.

例句:

The boy is so young that he can't go to school.

男孩太小了以至于他不能去上学.

He is such a young boy that he can't go to school.

他是一个很小的男孩以至于他不能去上学.

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