“When”不变的形式,多变的用法

1、“When ”不变的形式，多变的用法高考试题常常涉及到when的用法考查，可见其重要性。下面分析高考 试题关于when的考查情况，结合教学中学生在使用when时所出现的几个极易混淆的问题进行对比归类以便从中找出when用法的规律。when用在特殊疑问句中（通常when被命名为疑问副词）。When can you come back?你何时能回来？Whe n did you go to school yesterday?二、when用在并列句中（when为并列连词）when表示 “就在此刻（and just）”、“突然（and suddenIy）”之意，为并列连词，连接两个并列分句，其中when

2、前面的分句再现了 when后面分句动作发生的时间或背景。一般来说,when前面的分句在下面 四种情况下，when才有这种并列连词的功能。1. when前面的分句的谓语动词用了过去进行时。 例如:1) I was thi nking of this whe n I heard my n ame called我 正想着这件事, 突然听到叫我的名字。2) He was going to run away whe n the p oliceme n came他 正想逃跑，警 察突然出现了。3) The childre n were swimmi ng in the lake, whe n sudde

3、niy it bega n to rain.孩子们正在湖中游泳，天突然下起雨来。2. when 前面的分句的谓语部分用了“be (just) about to” , “be (just) on the point” 等结构。例女口 ： 1) She was just about to say something more when she noticed the sullen look on his face. 她刚想再说些什么 , 突然 看到了他阴沉的脸色。2) We were about to leave when he came我们刚要离开，突然他来了。3. when 前面的分句的谓语部

4、分用了“ be + 介词短语”结构。例如 ： 1) He was on his way to a lecture when a tourist stopped him and asked him for directions. 他正走在去听课的路上 , 突然一名游客拦住了他 问路。2) The mother and the seven-year-old boy were inside the house when the shooting occurred. 这位母亲和她七岁的男孩正在家里的时候 , 枪击 事件发生了。4. when 前面的分句的谓语动词用了过去完成时或过去完成进行时。例如：1

5、) We had just fallen asleep when the bell rang. 我们刚刚入睡 , 突然铃 声响了起来。2) The planes had been planting seed for nearly a month when it began to rain. 飞机播种了将近一个月天才开始下雨。三、用在时间状语从句中It was the five oclock when the accident happened in the street yesterday.I will tell her the news when she comes backHe could

6、 swim when he was a child.When spring came, he felt like a trip春天来到时，他就想作一次旅行。I had just stepped out of the bathroom and was busily drying myself with a towel when I heard the stepS我刚走出浴呈.忙着用毛巾擦身子，这时我听到了脚步声【 2019 年湖南高考题】 四、用在定语从句中I still remember the dayswe spent together. A .when B. whatC. that D.

7、in whichI still remember the dayswe worked together. A. when B. whatC. that D. for which whichI will never forget the three yearswe both spent in the little village.A. whenB. during whichC. whichD. in五、用在名词性从句当中1. When he will be back( when he will come) still stays a mystery.It does not matter when shewill come 2. I want to know when my teacher gives us a test.I always wonder when my parents buy me a ibcycle.3. The q