1、状语从句（条件状语从句（条件/时间状语从句）时间状语从句）（两课时）v一一.考点：考点：v知识点考纲要求状语从句（条件知识点考纲要求状语从句（条件/时间状语从句）时间状语从句）v1.掌握引导时间状语从句连接词的用法；掌握引导时间状语从句连接词的用法；v2.掌握引导条件状语从句掌握引导条件状语从句if,unless等用法。等用法。v二二.难点：难点：v时间状语从句中时间状语从句中when,before,after,since,until等连接等连接词的用法。词的用法。一、状语从句的概述v在复合句中修饰主句中的动词、形容词或副词等，充当状语的成分，那么这个句子就叫做状语从句。v状语从句通常由连接词
2、或词组引导。从句位于句首或句中时通常用逗号与主句隔开，位于句尾时可以不用逗号隔开 v二、时间状语从句v时间状语从句用来表示主句动作发生的时间。v引导时间状语从句的连接词有：when(while,as)当时候；before在之前；after在之后；since自从；until/till直到；as soon as一就。v1.when(while,as)v表示主句与从句的动作同时发生。v【例句】vTom will go to see you when he has time.汤姆有时间将去看你。vwhen,while和as的区别v（1）when引导的从句的谓语动词既可以是延续性动词，也可以是瞬间动词。
3、when有时表示“这时”。v【例句】vWhen she came in,I was doing my homework.v她进来时，我正在写作业。vWhen I lived in the countryside,I used to swim in the pond.v我住在农村的时候，常常在那个池塘游泳。v（2）while引导的从句的谓语动词必须是延续性的，并且主句和从句的动作同时发生或者是相对应的关系。while还可以表示对比。v【例句】vWhile my wife was doing housework,I was watching TV.v（do是延续性动词,“was doing”和“w
4、as watching”同时发生）vI like playing football while you like playing basketball.v我喜欢踢足球，而你喜欢打篮球。Practice 一一.时间状语从句：用括号中所给单词的适当形式填时间状语从句：用括号中所给单词的适当形式填空。空。1.She_(practice)playing the violin when the doorbell rang.2.I_（go）to visit European countries after I leave school.3.They_（not leave）their classroom u
5、ntil the bell_（ring）4.As soon as the police_（find）him,they will take him home.5.While Li Lei is playing basketball,Han Meimei_（jump）rope.was practicingwill gowont leaveringsfindsis jumping 二二.条件状语从句。条件状语从句。请用所给动词的适当形式填空。请用所给动词的适当形式填空。v1.If you_（drive）a car,dont drink alcohol.v2.If it_（snow）tomorrow,
6、well go to the park to make the snowman.v3.If he_（not study）hard,he will fail the exam again.v4.If everyone_（come）to the restaurant,the restaurant will be too crowded.v5.If Jack_（pass）the entrance examination of the college,he will go to Beijing.drivesnowsdoesnt studycomespasses中考链接（条件状语从句）中考链接（条件状语
7、从句）v1.Youll have a great time _ you go to the party.A.so B.if C.althoughv2.-I really want to join the square dance.Can I learn the dance well?-Yes,mom!Nothing is impossible _ you put your heart into it!A as long as B as soon as C.even if D unlessBA中考链接（条件状语从句）中考链接（条件状语从句）v3.Your dream will not come
8、true_ you keep trying your best.A.when B.unless C.whether D.beforev4.Do you think Robert will go to the zoo tomorrow?I think he will go if he_ too much homework A.dont have B wont have C.doesnt haveBC 1.You cant improve your spoken English _ you practice it everyday from now on.A.as soon as B.unless
9、 C.if D.since 2.I can hardly believe my eyes.Is that you,Lucy?Yes.It has been almost 20 years _ we were together.A.since B.before C.after D.untilBA状语从句状语从句中考链接中考链接 3.-What were you doing _ I knocked at the door?-I was sleeping.A.unless B.once C.when D.while 4.You can surf the Internet _ you want to
10、know about the 2020 World Middle School Games.A.until B.after C.ifCC状语从句状语从句中考链接中考链接原因状语从句原因状语从句概念概念 1.定义：在句中用来说明主句原因的句子叫原因状语从句。2.常用引导词：because(因为),as(由于),since(既然),for 3.时态：原因状语从句一般都是根据实际情况选用适当的时态。通常是主过从过，主现从现。My moyher doesnt go to work because she is ill.As(由于)we have no money,we cant buy it.Now
11、that（既然）you are here,youd better stay here.原因状语从句常用原因状语从句常用的连接词是：的连接词是：because,as,since,now that,for,和和considering that,seeing that 这七个连词都用于表示表示原因这七个连词都用于表示表示原因,但在语但在语气上一个比一个弱。气上一个比一个弱。e.g.He didnt come to school because he was ill.c.f.He might be ill,for he didnt come to school.表示“直接”原因。表示“间接的推断”原因
12、.不可出现在句首。because,since,as,for的区别:1.because直接原因直接原因，非推断语气最强 回答why的问题。2.since 通常放句首放句首译为“既然”3.as 不谈自明不谈自明的原因，语气最弱。4.for 放句中放句中，引导后半句表原因,或补充推断的理由。1.I danced in front of the people _ I liked it.2.Youd better wear strong shoes _ well do a lot of walking.3._ he was not well,I decided to go without him.4._
13、 everybody know about it,I dont want to talk any more.5.He must be ill,_ he is absent Today.6.Some people believe that _ oil is running out,the fate of the motor industry is uncertain.becauseasAsSinceforsince注意三个问题注意三个问题 1，because 和 so 不能连用，二者只能出现其一 Because she is ill，my moyher doesnt go to work.She
14、 is ill，so my moyher doesnt go to work.2,because 和 because of 的区别及转换 because+句子 becauseof+名词代词动词ing He cant come because the weather is bad.He cant come because of the bad weather.当堂检测练习.用because或because of 填空 1.I study hard _ I want to be a teacher in the future.2._ he is tired,he does not want to
15、go shopping with us.3.You laugh loudly _ this?4.The match was put off _ the heavy rain.5._ _ the storm,he didnt go there.单项选择()1I like rain _it makes me feel cool and relaxed.So do I.AorB.soC.but D.because()2.I didnt accept his help_ I wanted to try it myself.A.because B.thoughC.until D.unlessD A ()
16、3.The traffic policeman took away Jims drivers license _ he broke the traffic rules of drunk driving.A.though B.becauseC.till D.and()4.Rules are helpful to us，_we have to follow them.A.so B.butCor D.becauseB A 单元语法聚焦四()5._ he exercises every day,_ he is very healthy.A.Because;so B.Because;thoughC.Be
17、cause;/D.Though;/()6.We have to put off _ our sports meeting _ the bad weather.Ahold;becauseBhold,because ofCholding;becauseDholding;because ofC D 单元语法聚焦四1.He has to get up early _ the bad weather.A.because B.so C.because of D.as a result2.He didnt study hard _ he failed the exam.A.for B.as C.becaus
18、e D.so3.They arrived _ the air port at 8:00 this morning?A.at B.to C.in D.on4.My classmates and I had _ fun in the school trip.A.lots of B.a lot C.many D.fewCDAA()7.Why do you like your history teacher?_ he is very friendly and kind to us.ABecause BWhenCBut DWhat()8.Some of the students are nearsigh
19、ted _ they spend too much time watching TV or playing online games.Awhen BthoughCbecause DunlessA C 单元语法聚焦四9.He has to get up early _ the bad weather.A.because B.so C.because of D.as a result10.He didnt study hard _ he failed the exam.A.for B.as C.because D.so11.They arrived _ the air port at 8:00 this morning?A.at B.to C.in D.on12.My classmates and I had _ fun in the school trip.A.lots of B.a lot C.many D.fewCDAA
