when的句式结构,when的用法四种句型

when的句式结构,when的用法四种句型

固定句型1:had just donewhen刚做完某事……这时……eg:Hehadjustgoneto bedwhenthe telephone rang. 他刚上床睡觉，这时电话响了。固定句型2:be doingwhen是一个常用的连词，它可以引导时间状语从句，表示“当……时候”。在英语中，when的用法有五种基本的句型，分别是：S + V + when + S + V S + be V-ing + when + S + V S

when的句型解析如下：1.be doing sth…when…例：He was still smiling when the door opened and his wife came in. 他正笑着的时候门突然开了，他妻子走了进来。2.be aboutbe doing sth…when;be about to do sth…when;had not done sth…when;had just done…when;had not done sth…hardly…when。1、be doing sth…when…例：H

1.be doing sth…when…例：He was still smiling when the door opened and his wife came in. 他正笑着的时候门突然开了，他妻子走了进来。2.be about to do sth…when…1. be (just) about to dowhen She was just about to say something more when she noticed the sullen look on his face. 她刚要再说些什么，却突然看到了他阴沉的脸

when作为定语从句的引导词时，表示时间，在从句中充当时间状语，后面需要加上完整的陈述语序。句式如下：表示时间的名词+when+完整陈述句+句子其它成分。when用作连接副词，通常用来引导主语从句、表语从句、同位语从句、宾语从句及起名词作用的“when ＋动词不定式”结构.例如：When he comes is not known.他何时来还不

When常考的句式搭配：sb was/were doing sth when 某人正在做某事，这时sb was/were about to do sth when =sb was/were on the point of doing sth when 某人正打算做(2)When I reached the station，the train had left. 当我到达火车站时，火车已经开走了。　　2. 表示前面的叙述所没有提到过的信息。它总是对所描述的事件予以引人注目的强调