状语从句1 时间和原因课件

1、Adverbial Clause状语从句什么是状语从句？ It is a very difficult problem.The guests enjoyed the food very much.They finished the job before deadline.The old man sat on the beach, enjoying the afternoon sun.状语是句中修饰形容词、动词和副词的成分.通常以副词，介词词组，非谓语充当。什么是状语?什么是状语从句？由一个句子充当状语的从句，即状语从句。什么是定语从句？什么是主语从句？什么是宾语丛句？状语从句的分类1、时间状语

2、从句 2、地点状语从句3、原因状语从句 4、条件状语从句5、目的状语从句6、结果状语从句 7、让步状语从句8、比较状语从句9、方式状语从句Quiz TimeWhen she reaches home, she will have a short rest.I asked her to stay where she was.The children went to the farm because the farmers needed their help.If you jump a queue, the people will not be pleased.时间状语从句地点状语从句原因状语从句

3、条件状语从句Speak louder so that everyone can hear you.It was so black that I could hardly see anything.Though it is difficult, well do it.His box is heavier than Lilys (box is.)We must do as the teacher tells us.结果状语从句让步状语从句 比较状语从句方式状语从句目的状语从句1. _I was doing homework, a robber broke in.2. _I was doing ho

4、mework, my mother was preparing the dinner.3. _ I read my novel, my friend talked with a worker.小结：While表示可以持续一段时间，引导的时间状语从句动词必须为延续性，主从句动作同时进行。有时也含有对比的意思，可译成 “而”，如例2、3 WhileWhileWhileWhen & whileHe was playing video games_ mother came in._ he was playing video games, mother came in.小结：when 引导的从句用一般现

5、在/过去时，主句用进行时。While 引导的从句用进行时，主句用一般时。whenWhile 从句主句when一般时进行时while进行时一般时当我在看书的时候，门铃响了。I was reading when the door bell rang.While I was reading, the door bell rang.beforeIt is/was (not) 时间 before +从句 “用了多长时间/ 没用多久”It was one year before she came back. 她一年后才回来。It wont be long before the term ends. 不用多

6、久学期就要结束了。sinceShanghai has changed greatly _ the Reform and Opening Up Policy was carried out. 自从改革开放政策实施以来，上海已经发生了很大的变化。小结：since引导时间状语从句，意为“自从”。一般从句用一般过去时主句用现在完成时。 sinceIt is (has been) +时间+ since +从句 (did) “自从以来（已经）多久了”他开始学德语已经4年了。It is four years since he started learning German. = He has learned

7、 German for four years.* It is four years since he learned German. 他不学德语已经四年了。（从句动词是延续性动词时表示动作的结束） It is five months since she was a actress.她不做演员已经五个月了。until & tillShe waited for John in that caf until it closed. 她在咖啡店等John一直到那家店关门。John didnt leave his company until midnight. John直到半夜才离开公司。小结：当主句动词

8、是延续性动词时，通常用肯定句。 当主句动词是瞬间动词时，用否定句notuntil *Until & till 常常可以通用，只是till 不可用于句首。Adverbial Clause of Cause原因状语从句常用连接词： because, since, for, as*原因状语从句中because和so不可连用。*连接词中表原因的程度有强到弱依次是：becausesinceasfor because1. 表示直接原因，强调别人所不知道的事实。 2. 回答why的提问,只有because可以3. 只有because有强调句型 It is becausethate.g. It was bec

9、ause you used bad shampoo that your hair became so dry. 因为你使用劣质的洗发水你的头发才变干枯的。4. because of 后只能接名词短语，不能跟句子。 Because of the bad shampoo, your hair4. just because只是因为 only because仅仅因为，只是因为 not becausebut because不是因为而是因为e.g. Mary learns to play the violin not because she likes but because her mother for

10、ces her to. Just/ Only because her mother wanted to be a violinist herself. for I didnt go to school yesterday_ I had a fever. There must be no one in the house_ the light is off. 房子里一定没有人，因为灯是关着的。 表示附带补充的原因，不能用于句首。 可以表示根据迹象的推断，because则不能 要地震了，因为(你可以看到)老鼠都忙着搬出来。 It is going to be an earthquake, for

11、the mice are busy moving out. forbecause since & as“既然，由于”，一般用于句首，表示明显已知的原因。两者的用法相同。e.g. Since you are students, you should behave like students. 因为你们是学生，所以你们应该行为举止像个学生。其他连接词： now that, seeing that 用法同since,“既然，由于”_it rained, I stayed at home the whole weekend. Since/ As都可以，但是for不可用于句首故不行。 2. He must have g