1、Unit 4,Unit 4 Growing up,Grammar,e.g. It began to rain as soon as I left the house.,C Using as soon as and whenever,As soon as means when something happens, or a short time after something has happened.,Whenever means at any time.,e.g. I can read books whenever I want to.,the moment 一就,More about ba
2、sketball,Simon is writing about Davids love for basketball. Help Simon complete his sentences with as soon as or whenever.,David often goes to play basketball _ school is over. 2. He watches the NBA _ there is a game on TV.,as soon as,whenever,3. _ he talks about basketball, he gets excited. 4. _ he
3、 learnt that the NBA players would come to China, he tried his best to get a ticket.,Whenever,As soon as,语法小结,一、before, after, when, while, till, until, as soon as, whenever引导的时间状语从句中，如果主从句都指将来发生的动作，主句用一般将来时，从句用一般现在时。,e.g. She wont go home until she finishes her work.,二、since+过去式（自从），常与主句为现在完成时连用。,e
4、.g. John has worked in this factory since 1998.,三、while（当时）引导的时间状语 从句通常要用进行时。,e.g. Someone knocked on the door while I was watching TV.,四、before, after, since, till, until还可作介词，后接时间名词。,e.g. before 9 a.m. till/until today since 2009 after lunch,五、当主句和从句的主语是同一个人时还可用：before/ after/ when/ while doing st
5、h.,e.g. Youd better not listen to music while doing your homework.,六、as soon as 引导时间状语，表示“一就”,e.g. It began to rain as soon as I left there.,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。,e.g. They didnt come back until it was dark.,Yao Ming was born in Shanghai in 1980. He got his first basketbal
6、l (1)_ he was only four years old, but he did not become serious about basketball (2) _ he was 12.,when,until,Exercises,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 joined the Houston Roc
7、kets 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.,Before/When,When Yao Ming was living
8、 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.,whenever,Since/After,It was quiet _ those big trucks
9、 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,Choose the best answer.,3. I recognized you _ I saw you at the airport. A. the moment B. while C. after D. once 4. He was about
10、 to go to bed _ the doorbell rang. A. while B. as C. before D. when,正要/刚要/将要做某事,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（实验）. A. will not be; will know B. is; will know C. will not be; know D. is; know,1. Review the use of the conjunctions in this lesson. 2. Prepare for the next lesson.,