时间状语从句语法课创新.pptVIP

总结四： 1.When可指时间点，又可指时间段，从句中可用延续性动词，也可用非延续性动词。 2.While总是指一个时间段，从句中必须用延续性动词。 3.统一时态：主句过去式，从句也是过去式。 引导时间状语从句连词有： when (当……的时候) while （在……期间） as（当……，一边……一边……） before(在……之前) after(在……之后) until (直到……为止) as soon as（一……就……） 拓展延伸 课堂练习四: 用“while” 或 “when”填空。 May was talking on the phone,her sister walked in. I was walking in the street the accident happened. I saw Carlos , he was singing louldly. I was dancing , he was singing louldly. the teacher was speaking to class, he stood up suddenly. I was cleaning my room the telephone rang. While While When When While When Don’t forget to close the window _______ you leave. Helen went to fly kites _______ she finished her homework. Jack didn’t go to bed_________10:30 last night. He’ll send me a message _____________ he gets to London. _______I got to the station, it began to rain heavily. 用when, before, after, until, as soon as填空，每词只用一次。 before after until as soon as When 1.While my father the newspaper, I was watching TV. 2.While they （talk）, the bell rang. 3.You can’t do your homework while you （watch） TV. 4.When she （come） into my room , I was just reading a book. 5.I was out when you （call） me. 6.You were writing when the telephone (ring). 用括号中单词的适当形式填空。 called came are watching was reading were talking rang Kangkang, Michael and Darren rode to Tian’anmen Square together. _______ they parked their bikes, they walked to Tian’anmen Square. _______ they were enjoying exploring, the crowd of people became larger and larger. __________ the crowd was pushing Darren in all directions, someone stepped on his feet. _______ Darren finally pushed his way out, he couldn’t find his two friends. He was frightened and sat dow