发布时间 : 星期六 文章状语从句-林静雅 - 图文更新完毕开始阅读
（1）当我到了美国，我会给你写信的。I’ll write to you when I get to America. （2）《当你老了》(PPT中超链接该歌曲，播放前面两句) 当你老了，头发白了，睡意昏沉，我还是依然爱你。 I’ll still love you when you are old and grey, full of sleep. 当你老了，走不动了，炉火旁打着盹回忆青春，我还是依然爱你。
I’ll still love you when you walk slowly and nod by the fire, memorizing the youth. (感兴趣的同学可以回去找出叶芝的《when you are old》的英文诗歌，对照《当你老了》这首歌来读一读)
When引导的时间状语从句，当主句为一般过去时的时候，从句为一般过去时或过去进行时。 例如：
When he was a child he was always trying out new ideas. 他小时候就常常试验一些新的设想。
When I got to Chongqing, I finally understood why it was called “Mountain City”. 当我来到了重庆，我终于明白了为什么它被称作“山城”。
总结：when引导的从句的谓语动词可以是延续性的，也可以是非延续性的
While引导时间状语从句常译为“与···同时，在···期间”。While引导的从句常用延续性动词或者表示状态的动词。如：
They rushed in while/when we were discussing problems.
While the basketball players are competing in the court, the fans are cheering for them.
as引导时间状语从句可以表达“正当，一边···一边，随着”等意思。如： We get wiser as we get older.
Helen heard the story as she was washing the clothes.
注意 ：1）when和as都可用于非延续性的动词，而while不能
2）when可表示瞬间，也可表示时间段 ，与主句所陈述的动作、事情可同时发
生，也可有先后；while常用于连接同时进行的两个延续性动词相伴随而发生的动作；as不指先后，尤指两个动作或事件同时发生。如： The film had been on when we arrived.
My mother was cooking while I was doing my homework. As I left the house, I forgot the key.
练习：用when, while或as填空
1. Kitty was making a snowman Jim was taking photos. 2. the telephone rang, the Browns were having dinner. 3. Millie walked along the road, she sang a song.
4. Jim’s wallet fell on the ground we were running to the bus stop. 【2015山西】(完形填空节选)
My mother may have said more, but I didn’t hear. I didn’t hear anything 1 those terrible words: Leave me alone. My dad said them in order to 2 himself. He didn’t want to be hurt more. How much had I hurt him 3 I shouted out those words at him earlier in the day? 1) A except B among C towards 2) A hide B save C express 3) A when B until C before
2、before与after
before表示“在···之前”，after表示“在···之后”。如：(当主句为一般将来时的时候，从句为一般现在时)
I will always work hard before I enter Peking University.
It will take a long time before we finish this dictionary.（我们需要很长的时间才能把这部词典 编译完） 造句练习：
运动员要花很多年刻苦训练才能成为世界冠军。
It will take athletes many years to practice hard before they become the champion.
She showed me many beautiful stamps after I got to her home. 【2015浙江温州中考】
Mr. Smith has a habit of taking a shower he has breakfast. A. though B. before C. because D. since 【2015江苏常州中考】
---Jenny, will you leave for the USA now?
---No. It will be two weeks I leave here. A. until B. since C. before D. when
3、until/till的用法
都表示“直到”，常可换用，但till不用于句首。A until B，表示B动词开始的时候A动作停止。例如：
I’ll always protect you until you grow up.
You may stay here until the rain stops.（你可以在这里一直待到雨停。）
not···until表示“直到···才···”。如： She didn’t know the result until the reporter told her.（直到记着告诉她，她才知道比赛结果。）
（给学生连接视频）
翻译：
“山无棱，天地合，才敢与君绝。”（直到山没有了棱角，天与地合为一体，我才会与你分开。）
I wouldn’t break up with you until the mountains had no edges and the earth and the sky came into one.
【2014江苏启东中学一模】
---Why do you bring your own meals to school every day?
---Because of the earthquake, we can’t have meals at school the new dining hall is
completed.
A. until B. when C. if D. since
4、since
引导时间状语从句，表示“自···以来”，主句用一般现在时或现在完成时，从句用一
般过去时。如：
I have worked in this company since I graduated from Peking University. 【2015重庆中考B卷】
Miss Lin has taught us English we came to this school. A. for B. since C. before D. when 【2015浙江杭州中考】
I scared of dogs ever since a dog hurt me when I was five years old. A. will be B. was C. have been D. would be 【2014安徽中考】
Rick has learned a lot about Chinese culture he came to China. A. before B. when C. until D. since