Unit 4 Growing up——语法.ppt

1、Unit 4 Growing up,Grammar,Objectives:,1. To use “betweenand” to express a period of time,2. To use “from to” to express a period of time,3. To use “before”, “after” and “until” to talk about when things happen,4. To use “while” and “so” to talk about when things happen,用介词短语表示一段特定的时间,1. fromto 表示“从到

2、”,我通常每晚九点到十点看书。,这家店通常周一到周五营业。,I always read books from nine to ten every night.,The shop usually opens from Monday to Friday.,2. between and 表示“在和之间”,我今晚七点到八点之间可以看电视吗？,Can I watch TV between seven and eight tonight?,这个小女孩喜欢在午饭和晚饭之间吃些零食。,The little girl likes to eat some snacks between lunch and supp

3、er.,3. before, after, until表示发生的时间,before意为“比早一点的时候,在之前”； after的意思是“比迟一点的时候,在之后”,你进来之前应该脱掉鞋子。,Before you come in, you should take off your shoes.,西蒙写完作业后就去打篮球了。,After Simon finished his homework, he went to play basketball.,在你走之前请来看我。,Please see me before you go.,做完作业后, 他和朋友下棋。,After he finished his

4、 homework, he played chess with his friend.,4. Until的意思是“直到的时候”。 Until和till一般情况下可以互换，但 till一般只用于句子的中间，而until可以位于句子的中间和句首。,用于肯定句时，主句的动作必须是延续性的，这个动作一直延续到until或till所表示的时间为止,译为“直到为止”,让我们等雨停吧。,Lets wait until/till the rain stops.,用于否定句时，主句的动作可以是延续性的，也可以是非延续性的。这个动作一直到until或till所表示的时间才发生，译为“直到（才）”。,直到去了黄山，

5、我才知道中国还有这么美的景色。,Until I visited Mount Huangshan, I never knew there are such beautiful views in China.,from to betweenand before when if after until,1. I wont go to bed _ my mother comes back.,2. He could swim _he was five years old.,3. You may come to my office _ 9:00 a.m. _ 11:30 a.m. tomorrow.,4.

6、 We go to school _ Monday _ Saturday.,5. Tom will go skating with us _ he has time.,6. The train had already left _ we got to the station.,Exercises:,until,when,if,before,while, as表示事情（动作）同时发生,连接同时发生的一长一短两个动作。我们用while或as引导时间较长的动作， 这个长动作在时间较短的动作发生前就已经存在，之后或许还将继续下去。,Eddie睡觉时，Hobo去看电视了。,妈妈在烧饭时，Mary回来了。

7、,While Eddie was sleeping, Hobo went to watch TV.,Mary went back as her mum was cooking.,连续同时发生两个长动作，我们常用while.,Eddie睡觉时，Hobo正在看电视。,While Eddie was sleeping, Hobo was watching TV.,我们在外面时，天正下着雨。,It was raining while we were out.,连接两个同时发生的短动作，我们常用as.,As the customer sat down, the waiter gave him a cup

8、 of tea.,As you see him, give him this letter.,注意：while和as引导的状语从句的时态必须与主句时态保持一致。,顾客坐下来时，服务员给了他一杯茶。,你看见他时，把这封信交给他。,当你离开时,请随身带件雨衣.,As you leave, please take a raincoat with you.,Between from before after until while as,1. _ I saw the kangaroo, I never knew an animal can jump so high.,2. Ill play badmi

9、nton with you _ I finished my homework.,3. We must finish it _ 8:00p.m. and 11:00p.m. Come on! We dont have much time.,4. You should knock on the door _ you come in.,5. Can you watch TV _ 8:00a.m. to 9:30a.m.?,Until,after,between,before,from,between from before after until while as,6. _ the tiger came, all the animals ran away.,7. How can you know the ending _ you read the book?,8. Can I stay _ the weekend?,9. _ I was doing my ho