译林版9年级英语上册教案课件-第4课-Unit4__Grammar精品教案.doc

Unit4 Grammar精品教案Teaching aims:Learn the use of “before, after, when, while, since, till, until, as soon as, and whenever”.Step 1 RevisionTranslation:1. 上初中阶段，Spud 参加了学校篮球队的选拔。While _ junior high, Spud _ the school basketball team.2. 他接下来成了足球队的领队。 He _ leader of the football team.3. Lily更加刻苦地练习并使教练改变了主意。Lily _and got the coach _.4. 没有大学愿意邀请他去打篮球，仅仅因为他的身高。No university _ basketball only _ his height.5. 在他毕业以后，他被迫在另一个篮球联盟效力。_he _, he_ in another basketball league.6. 通过努力，他证明个头和体型真的不重要如果你决不放弃，几乎没有什么不能做到的。 _hard work , he _ that _ really does not _,you can do almost anything if you never _.Step 2 Grammar1. Learn the use of before, after, when and while, then complete the Part A.A Using before, after, when and while Before means earlier than a certain time.e.g. He remained there for about a year before the NBA took notice of him.After means later than a certain time.e.g. After he graduated, he was forced to play in another basketball league. When means at or during a certain time.e.g. When he finally got the chance, he scored 20 points in his first game.While means during a certain time.e.g. While (he was) attending junior high, Spud tried out for the school team. One of Davids daysDavid is writing in his diary about one of his days. Help him combine his sentences using before, after, when or while.1. I go jogging every morning. Then I have breakfast._2. I practised playing basketball for hours. I felt tired out._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. _2. Learn the use of since, till and until, then complete the Part B.B Using since, till and untilSince means from a certain time. The verb in the main clause is often used in the present perfect tense.e.g. Youve been happy since I first met you.Till and until mean up to a certain time. Until can be placed at the beginning or in the middle of the sentence, but till is usually used in the middle of the sentence.e.g. Spud remained in another basketball league for about a year till/ until the NBA took notice of him. Until his dream came true, Spud never gave up.When we use the structure notuntil, we cannot use till instead of until. e.g. Dont wake me up until you finish your work.David loves basketballHere are more sentences from Davids diary entry. Complete his sentences 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 _ yesterday evening, so we could not practise basketball for several 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.3. Learn the use of as soon as and whenever, then complete C1.C Using as soon as and wheneverAs soon as means when something happens, or a short time after something has happened. e.g. It began to rain as soon as I left the house.Whenever means at any time.e.g. I can read books whenever I want to.More about basketballSimon is writing about Davids love for basketball. Help Simon complete his sentences with as soon as or whenever.1. David often goes to play basketball _ school is over.2. He watches the NBA _ there is a game on TV.3. _ he talks about basketball, he gets excited. 4. _ he learnt that the NBA players would come to China, he tried his best to get a ticket.Step 3 Summary一、 before, after, when, while, till, until, as soon as, whenever引导的时间状语从句中，如果主从句都是将来发生的动作，主句用一般将来时，从句用一般现在时。二、since（自从）常与现在完成时连用。三、while（当时）引导的时间状语从句通常要用进行时。 四、before, after, since, till, until还可作介词，后接时间名词。五、当主句和从句的主语是同一个人时还可用：before/ after/ when/ while doing sth.六、as soon as 引导时间状语，表示 “一就”注意：hardly (scarcely, rarely)when / before, no soonerthan相当于as soon as之意。主句用过去完成时，从句用一般过去时。当hardly, scarcely, rarely和no sooner位于句首时，主句应用倒装语序。七、till和until通常可以互换，但当“直到”这词用于句首或与not连用时只能用until。Step 4 ExercisesComplete C2 on page 56.David is writing about Yao Ming, his favourite basketball star. Help him complete his article with the correct conjunctions you have learnt in this unit.Yao Ming was born in Shanghai in 1980. He got his first basketball (1)_ he was only four years old, but he did not become serious about basketball (2) _ he was 12. Yao joined the Houston Rockets in 2002 and became the best Chinese player to have ever played in the NBA. (3) _ he went to the USA, he knew little English, but he quickly learnt the language. The best moment in his career was in 2004he scored 41 points in a game against the Atlanta Hawks.When Yao Ming was living in the USA, he returned to China (4)_ he was needed. He took part in the Olympics in 2004 and in 2008 as one of the Chinese athletes. (5) _ he ended his basketball career, Yao has done a lot of charity work, especially for poor Chinese teenagers.Choose the best answer.1. It was quiet _ those big trucks started coming through the town. A. before B. after C. until D. unless 2. It seemed only seconds _ the boy finished washing his face. A. when B. before C. after D. even if 3. I recognized you _ I saw you at the airport. A. the moment B. while C. after D. once 4. He was about to go to bed _ the doorbell rang. A. while B. as C. before D. when 5. Several weeks had gone by _ I realized the painting was missing. A. as B. before C. since D. when 6. It _ long before we _ the result of the experiment. A. will not be; will know B. is; will know C. will not be; know D. is; know 7. _ got into the room _ the telephone rang. A. He hard