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1、Unit 4 Growing up Grammar【课前导学】请找出下列句子的共同点，并翻译成中文。1. It started to rain when we were at the park.2. The telephone rang while the girl was doing her homework.3. Dont forget to turn off all the lights before you leave the house.4. I will not start to cook dinner until you come back from work.5. All th
2、e boys rushed out of the classroom as soon as the bell rang.你还可以给出点例子吗？_【课堂学习】1. Check the answers, and choose some students to write their examples on the blackboard.2. Lead-inAsk some students translate some sentences.（可以小组竞赛）a. 请在下午两点之前到达学校。b. 自从3年前，我就离开北京了。c. 你一到南京就打个电话给我。3. Presentation（一）befor
3、e , after, when and while Read and translate:(1).He remained there for about a year before the NBA took notice of him.(2).After he graduated, he was forced to play in another basketball league.(3).When he finally got the chance, he scored 20 points in his first game. (4). While attending junior high
4、, Spud tried out for the school team.Ask : who can say anything about before,after,when and while?(小组讨论)Conclusion: how to use them？（见课件）Before： at an earlier time thanAfter : at a later time thanwhen 既指时间点，也可指一段时间； while 只指一段时间，因此when引导的时间状语从句中的动词可以是短暂性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。 Practice （二
5、）since，until and till小组合作，讨论一下我们以前所学的有关它们的知识，看看哪个小组说的全面。再次给出解释（见课件）since 译作“自从以来” (1)接时间点 (2)接一段时间 + ago (3)接时间状语从句Till and until mean up to a certainly 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. （1）用于肯定句作“直到为止
6、”解时，主句的动词一般是延续到until / till表示的时间为止（2）在“not.until.”句式中不能用till替代 （3）句首通常只用until,不用tillPractice (三) using as soon as and whenever 1. How to use as soon asAs soon as means when something happens, or a short time after something has happened 2. How to use wheneverWhenever means at any timeLet students di
7、scuss first, and then give some examples.(见课件) Practice : part c1 and c24. Group workDiscussion:小组合作，就school rules 这个话题展开讨论， 尽量使用我们课文中所学的连词。 如：We have to as soon as比一比：哪个小组列举的最多【课后拓展】1. 请翻译下列句子（1） 自从他搬到这里以来，他已经交了好多朋友了。_（2） 当他在吃晚饭时，他的朋友来了。_（3） 直到你学会了物理，你才会知道它多有用。_（4） 请你一到办公室就给经理打电话。_（5） 无论我什么时候经过他们的房
8、间，他们总是吵吵闹闹的。_2. 选择正确的连词填空。before until after as soon as while when since（1）Jim has been in the factory for three years _ he left school.（2）Mike is good at playing basketball _ Bruce does well in football.（3）This coat will not lose colours _ its washed.（4）I will not believe you _ I see it with my own
9、 eyes.（5）I must finish the work _ I go home.（6）The big clean-up began _ the typhoon passed away.（7）The students were talking _ the teacher came in.3. 句型转换（1）The teacher will tell him the news at once when he arrives at the school.（同义句） The teacher will tell him the news _ _ _ he gets to school.（2）He
10、 went to bed after 2 a.m. （同义句） He _ go to bed _ 2 a.m.（3）Jacks teacher asks him, “ can you see the blackboard?” (合并) Jacks teacher asks him _ _ _ see the blackboard.（4）My father is a farmer. My mother is a farmer, too.(同义句) _ my father _ my mother_ farmers.（5）The girl was so young that she couldnt take care of herself.(同义句) The girl was not _ _ to take care of herself.3
