(時(shí)間狀語(yǔ)從句)-PPT課件

1、Unit6 Topic2 語(yǔ)法專項(xiàng)課件（時(shí)間狀語(yǔ)從句）初中英語(yǔ)仁愛(ài)版八年級(jí)下冊(cè)時(shí)間狀語(yǔ)從句的分類1. 表示同時(shí)性，即主從句的謂語(yǔ)動(dòng)作同時(shí)發(fā)生或幾乎同時(shí)發(fā)生。包括：when（當(dāng)時(shí)候），while（當(dāng)時(shí)候），as（當(dāng)時(shí)候），as soon as（一就）等。2大家好時(shí)間狀語(yǔ)從句的分類Mary cut her finger when she was making a kite.As she was reading the newspaper, grandma fell asleep.3大家好時(shí)間狀語(yǔ)從句的分類2. 表示先后，即主句的謂語(yǔ)動(dòng)作發(fā)生在從句之前或之后。包括：after（在之后），before

2、（在之前）。4大家好時(shí)間狀語(yǔ)從句的分類After we heard the news, we were all excited.He made a plan before he went to London.5大家好時(shí)間狀語(yǔ)從句的分類3. 表示持續(xù)。until（直到才/為止)6大家好時(shí)間狀語(yǔ)從句的分類1. He waited for his father until it was twelve oclock.2. He didnt go to bed until he finished his homework.7大家好易錯(cuò)點(diǎn)1Once you see her, you will never

3、forget her.Please call me as soon as you arrive America.主將從現(xiàn)主祈從現(xiàn)8大家好易錯(cuò)點(diǎn)3when/while/as的區(qū)別9大家好易錯(cuò)點(diǎn)3when/while/as的區(qū)別as:1. She came up as I was cooking.（同時(shí)）10大家好易錯(cuò)點(diǎn)3when/while/as的區(qū)別when:1. When we were at school, we went to the library every day.（在一段時(shí)間內(nèi)） 2. Sorry，I was out when you called me.（call為短暫性動(dòng)詞）

4、3. When I got to the airport，she had left.（got to后發(fā)生）11大家好易錯(cuò)點(diǎn)3when/while/as的區(qū)別while:1. When While As we were dancing，a stranger came in.（dance為延續(xù)性動(dòng)詞）2. Please dont talk so loud while others are working. （work為延續(xù)性動(dòng)詞）12大家好【典例1】I didnt believe he could drive _ he told me. A. once B. while C. since D. u

5、ntil考查時(shí)間狀語(yǔ)從句連接詞。句意：直到他告訴，我才相信他會(huì)開(kāi)車。notuntil直到才，固定搭配，答案選D。13大家好【典例2】Henry will give us a report as soon as he _. A. arrives B. arrived C. is arriving D. will arrive考查時(shí)間狀語(yǔ)從句連接詞。句意：亨利一回來(lái)就給我們作報(bào)告。as soon as為時(shí)間狀語(yǔ)引導(dǎo)詞，遵循“主將從現(xiàn)”原則，故答案選A。14大家好語(yǔ)法加油站總結(jié)本單元的語(yǔ)法知識(shí)，你掌握了嗎1. when表示“當(dāng)?shù)臅r(shí)候”。從句中既可用延續(xù)性動(dòng)詞，又可用非延續(xù)性動(dòng)詞。從句中的動(dòng)作既可和主

6、句的動(dòng)作同時(shí)發(fā)生，又可在主句的動(dòng)作之前或之后發(fā)生。如： When I came into the room, I found him lying there asleep. Mary was having dinner when I saw her. When you meet a word you dont know, look it up in the dictionary.時(shí)間狀語(yǔ)從句15大家好語(yǔ)法加油站總結(jié)本單元的語(yǔ)法知識(shí)，你掌握了嗎2. Whilewhile表示在的時(shí)候、在期間。它強(qiáng)調(diào)主句的動(dòng)作與從句的動(dòng)作同時(shí)發(fā)生或主句的動(dòng)作發(fā)生在從句的動(dòng)作過(guò)程中。while從句中必須是表示動(dòng)作或狀

7、態(tài)的延續(xù)性動(dòng)詞。如：The weather was fine while we were in Beijing.While we were swimming someone stole our clothes.While my wife was reading the newspaper, I was watching TV. 16大家好語(yǔ)法加油站總結(jié)本單元的語(yǔ)法知識(shí)，你掌握了嗎3. as1）表示“當(dāng)時(shí)”、“和同時(shí)”。從句中多用表示動(dòng)作的動(dòng)詞，而不用be動(dòng)詞或表示感覺(jué)、理解、知道這類動(dòng)詞。She dropped the glass as she stood up.2）用于平行的動(dòng)作中，表示“一

8、邊一邊。常指一個(gè)主語(yǔ)同時(shí)進(jìn)行兩個(gè)動(dòng)作。He sang as he worked.3）用于平行發(fā)展的結(jié)構(gòu)中，表示隨著。As it grew darker it became colder.As he grew older he became more confident.17大家好語(yǔ)法加油站總結(jié)本單元的語(yǔ)法知識(shí)，你掌握了嗎4. after, before, as soon as, notuntil after表示主句的動(dòng)作發(fā)生在從句動(dòng)作之后；before表示主句的動(dòng)作發(fā)生在從句動(dòng)作之前；as soon as表示 “一就”； notuntil表示“直到才”。You should make a good plan before