一、when引导状语的八个重要句型 1.be doing sth…when…正在做...，这时... The reporter said that the UFO_______ (travel) east to west when he saw it.(NMET2000)
when能引导三大从句，如何区分？ 一、when引导状语从句： 要点：when及所引导从句代表一个时间，整体作主句的状语；翻译成：某某事发生的时间；when作从句的状语。 It's cold when it …
句子结构：when从句用过去进行时，主句用过去式。 例句： When rolling down the hill, he snatched at a rock. 在向山下滚的过程中，他一把抓住了一块岩石。 When running, he stumbled me. 跑动 …
答：當位於句末的when 分句具有此種用法時, 它前面的分句大致有三種情況: A. when 分句前面的分句使用過去進行式: He was still smiling when the door opened and his wife came in. 他正笑著的時候, …
来自 English Grammar Today. When is a wh -word. We use when to ask questions, as a conjunction and to introduce relative clauses. When as a question word. We can use when …
更多内容请点击：【英语知识点】when引导的句子前后时态 - 百度文库 推荐文章