1、知识改变命运，学习成就未来欢迎各位老师踊跃投稿，稿酬丰厚 邮箱：第 1 页 共 3 页高考英语必考句型讲与练九句型 15when 引导的从句when 除了用来引导主语从句、宾语从句、时间状语从句、表语从句和定语从句，还有一种用法值得关注，那就是 when 引导并列分句，意思是“这时突然；就在那时”，强调另一个动作的突然发生。常用于以下句型中：（1）、主语 + be doing when意思是“正在做某事这时”；（2）、主语 + be about to dowhen；（3）、主语+be on the point of (doing) when意思是“正要去做某事这时” 例句One day Chu
2、ck was on a flight across the Pacific Ocean when suddenly his plane crashed. 有一天，Chuck 正在太平洋上飞行，这时他的飞机突然爆炸了。I dont know when he will arrive. 我不晓得他什么时候到达。I thought of the happy days when I was in Beijing. 我想起了在北京时的那段快乐日子。I believe the time will soon come when there will be no weapons in the world. 我相
3、信世界上没有武器的日子不久就会到来。 I was walking along the river when I heard a drowning boy cry for help. 我正在河边行走，这时我突然听到一个落水男孩求救。I was about to leave when it began to rain. 我刚要离开，这时下雨了。I had just finished my exam paper when the bell rang, announcing the class was over. 我刚做完作业，下课铃响了。I thought of the happy days whe
4、n I was in France. 我想到了在法国时那段快乐日子。I believe the time will soon come when there will be no weapons in the world. 我相信世界上没有武器的日子不久就会来临。比较I was walking along the street when I caught sight of a tailors shop. 我正在街上走，这时我看见一家裁缝店。I was walking along the streets. Just at the moment I caught sight of a tailor
5、s shop. 我在街上走。就在那时我看见一家裁缝店。 知识改变命运，学习成就未来欢迎各位老师踊跃投稿，稿酬丰厚 邮箱：第 2 页 共 3 页高考题回放1. He was about to tell me the secret _ someone patted him on the shoulder.（2002 上海）A. as B. until C. while D. when 2. Dont be afraid of asking for help _ it is needed.（2003 全国卷）A. unless B. since C. although D. when 3. We w
6、ere swimming in the lake _ suddenly the storm started.（2004 北京春季）A. when B. while C. until D. before 4. Jasmine was holidaying with her family in a wildlife park _ she was bitten on the leg by a lion.（2004 上海）A. when B. while C. since D. once 5. I was just talking to Margaret when Jackson _.（2005 湖南
7、）A. cut in B. cut down C. cut out D. cut up 6. He transplanted the little tree to the garden _ it was the best time for it.（2005 上海）A. where B. when C. that D. until 7. Did Jack come back early last night? Yes, it was not yet eight oclock _ he arrived home. A. before B. when C. that D. until 8. Most
8、 of us know we should cut down on fat, but knowing such things isnt much help when it _ shopping and eating.（2006 天津）A. refers to B. speaks of C. focuses on D. comes to 9. He was about halfway through his meal _ a familiar voice came to his ears.（2006 辽宁）A. why B. where C. when D. while 10. When _ d
9、ifferent cultures, we often pay attention only to differences without noticing the many similarities.（2006 浙江）A. compared B. being compared C. comparing D. having compared 11. I _ along the street looking for a place to park when the accident _.（2006 安徽）A. went; was occurring B. went; occurred知识改变命运
10、，学习成就未来欢迎各位老师踊跃投稿，稿酬丰厚 邮箱：第 3 页 共 3 页C. was going; occurred D. was going; had occurred 12. How can you expect to learn anything _ you never listen?（2006 山东）A. in case B. even if C. unless D. when 13. I had just stepped out of the bathroom and was busily drying myself with a towel _ I heard the steps
11、.（2006 湖南）A. while B. when C. since D. after14. I was still sleeping when the fire _, and then it spread quickly.（2006 广东）A. broke out B. put out C. came out D. got out 15. Please remind me _ he said he was going. I may be in time to see him off. (NMET2006)A. where B. when C. how D. what 参考答案和提示 1. D 2. D 3. A 4. A. 5. A 6. B 7. B 8. D 9. C 10. C 11. C 12. D 13. B 14. A 15. B
