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We were swimming in the lake ________ suddenly the storm started.

时间:2022-07-21 21:59:21

We were swimming in the lake ________ suddenly the storm started.

A.when

B.while

C.until

D.before

答案及解析: A

解析:

本题意为“我们正在湖里游泳,这时突然刮起了风暴。”when引导时间状语从句时,表示“在……时候”;

也可以引导定语从句,此外还可用做并列连词,表示“就在这时/那时。”while既可引导时间状语,也可以做连词,意为“而,然而”;

until意为“直到……”;

before意为“在……之前。”这二者都只引导时间状语。

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