牛津版新9A第四单元语法课件.ppt

3. I met Peter. I was waiting at the bus stop. ___________________________________ _______________________________ 4. I was watching TV. I received a call from my uncle. ___________________________________ ________________________________ 5. I was ready to go to bed. My father came back from work. ___________________________________ ________________________________ I met Peter while (I was) waiting at the bus stop. While (I was) watching TV, I received a call from my uncle. I was ready to go to bed when my father came back from work. When did he join the national basketball team? How about his basketball career later? ________ he was 18 years old, he joined the national basketball team. When ________ he joined the national basketball team, he has won many competitions. Since since在一般情况下，从句谓语动词用一般过去时，而主句的谓语动词用现在完成时的延续形。 Why is he so famous all over the world? He _______ get the chance to be a world-famous superstar _______ he joined the NBA. He _______ practiced playing basketball very hard __________ the year 2011, when he ended his basketball career. didn’t until / until/till until/till until在肯定句首，句中 till 放在句中，不能放句首。 not…until 直到…才……主句的谓语动词可为瞬间性动词 ( )—When did you go to sleep last night? --- ________ I finished my homework. A. Until B. Not until C. Before B 补全！ I did not go to sleep until I finished my homework B1.Practise: Fill in the blanks with since, till or until. 1.I have been crazy about playing basketball _______ I was a little boy. 2.The weather has been awful this week. The rain did not stop_____ for seven days. 3.We played basketball in the playground this afternoon__________ it was getting dark. 4.It is the first time we have played basketball______ Monday. We enjoyed ourselves very much. 5.I waited for 20 minutes at the bus stop_________ the bus arrived. 6.It is Friday evening. I will not go to bed_______ I finish watching my favourite TV programme. since until until/till since u