2021年中考英语时间状语从句讲解ppt课件.ppt

1、副词：修饰限定动词动作或者修饰形容词和副词（对动词或形容词 进一步，更详细的描述）根据作用分为：时间，地点，原因，结果，目的，让步，比较，伴随，条件，程度，方式副词。副词作状语，（时间状语，地点状语，原因状语；目的状语，让步状语，条件状语，比较状语，伴随状语，方式状语，程度状语）副词的位置：靠近被修饰的词1.修饰动词的副词可以在动词前，也可以动词后。The boy barked loudly.狗大声地叫唤。The boy loudly barked.2.修饰形容词或副词时，常位于副词或形容词前。He is very confident.3.副词位于句首，后用逗号，起连接作用However,pa

2、rents often are strict with their children in their studies.然而，父母经常在学习方面严格要求孩子。时间状语：动词动作发生的时间 yesterday；last+时间；every+时间；the other daynow,next+时间；for+时间；since+时间点，tomorrow They will arrive tomorrow.The man was killed yesterday morning.时间状语从句：一个句子作时间的概念，说明主句动词动作发生的时间位置：位于句首，后有逗号，与主句分开 位于主句后，不用逗号。连接词：

3、until；after；before；as soon as,when,while,as,tillnot.until.;whenever;since till(介词）直到（某一刻）；（表示时间）直到（某事发生）+名词They talked till dawn.他们一直谈到天明。It was not till 11 oclock that he came back last night.昨晚直到11点他才回来。till(连词）直到.时 引导时间状语从句Please wait for me till I come back.until(连词）直到.为止He waited until she had

4、finished speaking.他一直等到她讲完。Until recently,they have finished the task.直到最近，他们才完成任务。until:位于句首，多用于书面语。till:不放句首，多用与口语中。not.unti.直到.才.用法：主句的动作，直到从句的动作发生，才发生。He didnt sleep until his father came home.他直到他爸爸回家才睡觉。爸爸回来（从句动作），他才睡觉。（主句动作）Not until.直到.才.（位于句首）When can I go?我何时可以走？Not unti the work is finish

5、ed.直到工作完成，你才能回家。I will call you up as soon as I arrive home.我一到家就给你打电话。Marry didnt go to bed until his father came back.玛丽知道她爸爸回来后采取睡觉。He is singing when the old man comes home.The dog sleeps until the sun rises.狗一觉睡到大天亮。You can come to for help whenever you like.你什么时候过来找我帮忙都可以。He has studied hard s

6、ince he failed the last exam.自他上次考试不及格，他就一直在努力。when 的用法：（时间连词）1.一.就.When the meal was finished,Tom washed up.一吃完饭，Tom 就洗了餐具。2.在.时候；当.时；在.时间Call me when you are free.当你不忙了，给我打电话。while 的用法：（时间连词）1.在.期间；当.时候=when（某一件事发生在另一件事的过程中）It rained while/when I was sleeping.当我在睡觉时，突然下雨了。2.与.同时；（主从句动作同时发生）Tim is

7、sleeping while Lucy is singing.as 的用法：（时间连词）1.当.的时候=when=whileI saw Peter as I was getting off the bus.我下公交车的时候看见了彼得。2.随着.（不强调时间，强调主句动作发生的背景）As I grow,I know a lot about Chinese culture.随着自己的成长，我学到很多中国文化。as 的用法：（原因连词）引导原因状语从句He was late for school,as the traffic was bad.as 引导比较状语从句as.as.(第一个as 是副词，像

8、.一样，第二个是连(表如同；正如）He is as tall as Tom.as 引导方式状语 （照.方式）They did as I had told.他们是按照我的要求做到。whenever(时间连词）引导时间状语从句（每当.）Whenever I heard that song,it made me think of my lover.每当听到这首歌，我就想起来我的爱人。whenever（连词）引导让步状语从句（不论何时）Come and visit me whenever you want.什么时候来看我都行。when;while；as 的区别用法：（时间连词）1.when 引导的从句：从句的谓语动词可以是延续性动词，也可以是短暂动词。从句的谓语动词可以和主句谓语动词的动作是同时，或之前，或之后。2.while 从句的谓语动词必须是持续性动词，主从句动词动作同时发生。或者主句的动作发生在从句动作的过程中。3.as 侧重从句动词动作与主句的动词动作同时发生。从句谓语动词可以是延续性，也可以是短暂性。