Question

After they ____ at the hotel, it began to snow. A. had arrived B. had reached C. arrived D. reached

After they ____ at the hotel, it began to snow.
A. had arrived B. had reached C. arrived D. reached

答案是A，为什么？

Answer 1

had done形式是过去完成时，表明事情发生在过去的过去。
began to snow，表明下雪是发生在过去的。而他们到达宾馆在下雪前，所以他们的到达是发生在过去的过去。也就可以判定为过去完成时。arrive才可以加at，reach不能。所以A。

Answer 2

看句子意思，当他们到达宾馆后，天开始下雪了

注意 他们已经到达宾馆了 就应该用完成时态
再看 后面是过去时态，前面也要用过去时态，所以用 had arrived
如果用reach的话，后面应该直接跟宾馆 reach hotel

明白了没有？

希望能采纳，谢谢

Answer 3

A
过去完成时，强调过去的过去。
即强调动作发生之后，主句动作才发生。
翻译为：在他们到达旅馆后，开始下雪。（强调他们到达得及时，幸运）
reach=arrive+介词。

满意望采纳~

追问

不可以用过去式吗？

追答

其实：两种说法都对。after 引导的状语从句，既可用一般过去时，也可用过去完成时。只是用过去完成时，更强调主句动作的发生，是在从句动作之后。