时间状语从句课件(

用括号内动词的正确形式填空 was cooking • 1.My mother ___________(cook) dinner got when I _______(get) home last night. met • 2.I _________(meet) Lingling when I was walking ___________(walk) along the street. was listening • 3.Lily _________(listen) to music while was reading Lucy __________(read) a story book. came • 4.When the teacher _________(come) in, were talking the students _____________(talk) will call • 5.He _________ (call) you as soon as gets he____(get) to Guangdong.
When的常用于下列句式：
be doing /be going to do sth
be about to do sth.Biblioteka had just done
意思为“正在/刚要/刚做完……这/那时（突然……）”
Exercise
1. We were swimming in the lake ______ A
suddenly the storm started. A. when B. while C. until D. before 2. He was about to tell me the secret D ______someone patted （拍）him on the shoulder（肩膀）. (上海) A. as B. until C. while D. when
四、时间状语从句其它引导词小结：
the moment, the minute, immediately, instantly， every time, since, before, after, until, not…until, as soon as 等 1.They rushed out of the room immediately they heard a loud noise.(他们一听到一声巨响就从房间里 冲了出来） 2. As soon as he comes, I’ll tell him. 3. The moment I saw him, I recognized（认出） him. 4. The boy didn’t go to bed until his parents came back.
Examples in our textbook
1. When he was orbiting in the capsule, he took photographs of planet earth. 2. When yang landed, Premier Wen Jiabao telephoned the Control Centre to offer his congratulations. 3. When Yang took off from Jiuquan in northwest China at 9 am yesterday, China became the …. 4. While he was travelling in space, Yang spoke to two astronauts aboard the …. 5. While she was waiting a taxi outside, she met Sam Parrish.
5.– Was his father strict with him when he was at school? – Yes. He had never praised him _____ C he became one of the top students in his grade. A. after B. unless C. until D. when D someone 6. He was about to tell me the secret _____ patted him on the shoulder. A. as B. until C. while D. when
注意：延续性动词表达的动作能够延续，如：keep保存，维持；walk走路；read 阅读等；非延续 性动词也称瞬间动词，所表达的动作不能够延续。如：hear听到；return 归还；see看见。
3.用while, when填空：
① _____________ When/While/As I was walking down the street, I noticed a police car in front of the store.
when表示从句动作和主句动作同时发生，或先于主句动作； while表示从句的动作与主句动作同时发生，并有延续的含义； as从句动作与主句动作同时发生，常译为“一边…一边…” 。 从句动作和主句动作同时发生，且从句动作为延续性动词时， when，while，as都可使用.
When/While/As _______________was walking down the street，I saw some policemen． When _______they heard the news，they were surprised． While ______the child was playing with his toys，his parents were watching TV. as They shouted slogans ___they passed the square.
3. He made a mistake, but then he corrected the C situation _____ it got worse. A. until B. when C. before D. as 4. I’ll write to you C ____I get there. A. while B. before C. as soon as D. by
Homework
• Write a short article including adverbials as many as possible. • Keep the meanings of the conjunctions in mind. • Finish the exercises about grammar in your books
7. He has lived in the city _______ he came back C from America. A. when B. before C. since D. after A 8. We won’t leave here _______ our teacher comes back. A. until B. since C. after D. as soon as B 9. I had to finish the picture ________ my mother came back. A. until B. before C. after D. while C 10. John fell asleep ________ he was listening to the music. A. after B. before C. while D. as soon as
• 一、 when/while 的区别 • 1.when表示主从句两个动作同时发生或先后 发生。而while表示主从句两个动作同时发生 或强调主句的动作在从句动作进行期间发生。 (1)______ they are waiting for the New Year, they listen to music , sing songs and dance. When the boy saw his mother, he stopped (2)______ crying.
While
2. when+短暂性动词或延续性动词 • while+延续性动词(一般为be doing。)
when I saw him. (1)He was doing his homework ______ while (2) Please don’t talk so loud ______others are working 3.进行时+while+进行时 while I was singing She was dancing _______ 4.从句动作和主句动作同时发生，且从句动作为延续性动 词时，when，while，as都可使用 When/While/ As ___________she was singing, we all lost ourselves in her beautiful voice.
三、When 的特殊用法
when We were having a class ______someone broke in.(突然有人闯了进来). when We were about to set off______it began to rain. (这时开始下雨了)
总结：相当于and at this / that time。意思为 “正在/刚要……这/那时（突然……）”
When ② ____________ John arrived, I was cooking lunch. ③ I was wandering（徘徊） through the when I caught sight of a tailor’s street_________
shop.
二、when／while／as的用法。