




下载本文档
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、状语从句的分类一、时间状语从句时间状语从句表示时间,引导词有:when, while, as, till, until before, after, since时间状语从句的引导词所表示的意思不尽相同,要注意把握不同引导词所表示的不同时间关系,以及它在具体句子中对应的时态、语态等问题。注意:as (在时候,因为),since (自从,因为),它们可以引导时间从句,并强调主句 和从句的动作同事发生。并且while 有时还可以表示对比。例如:( 1) While my mother was reading the newspaper, I was watching TV.(read是延续性的动词,
2、 read 和 watch 同事发生)I like playing football while you like playing basketball.我喜欢踢足球,而你喜欢打篮球。(对比)(2) when (当的时候),引导的从句的谓语动词可以是延续性动词,也可以是瞬间动词。 从句动作可与主语动作同事发生,也可在其后发生。I was reading a book when she came into my room.(come 是瞬间动词,只能用when 引导,不能用 while)I often missed my home when(while) I lived in NewYork.(
3、live 是延续性动词,when可用while 代替)(3) when和while的区别还在于:while引导的时间状语从句多用于进行时态,而 when引导的 时间状语从句多用于一般时态。While they were talking, the bell rang.正在他们谈话的时候,上课铃响了。(4) as译作“一边一边”、“随着”,侧重主句和从句的动作同时发生。有时可与 when, while 通用。We always sing as we walk.我们总是边走边唱。(as表示“一边一边“)As you grow, you will know more and more 。随着年龄的增长
4、,你会懂得越来越多。2 .till 或 until 引导的时间状语从句till , until (直到才):一般情况下两者可以互换,但是在强调句型中多用until 。 till不可以在句首,而until 可以放在句首。注意:如果主句中的的谓语动词是瞬间动词时,必须用否定形式;如果主句中的谓语动词是延续性动词时,用肯定或否定形式都可以,但表达的意思不同。例如:I didn t go to bed until(till) my father came back.直到我父亲回来我才上床睡觉。(goto bed 是瞬间动词,主句用否定形式)I talked until he came back. 我工
5、作到他回来为止I didn't work until he came back. 他回来我这才开始工作Please wait until I arrived. 在我到达之前等我。3 .since 引导的时间状语从句Since (自从):引导的从句的谓语动词可以是延续性的动词,也可以是瞬时动词。一般情况下,从句谓语动词用一般过去时,而主句的谓语动作用现在完成时。但在It is+ 时间 +since 从句的句型中,主句多用一般现在时。例如:I have been in Beijing since you left.自从你离开以来,我一直在北京。Where have you been sin
6、ce I last saw you? 自上次我和你见面以后,你到哪里去了?It is five months since our boss was in Beijing.我们老板离开北京有五个月了。4. 由 before 和 after 引导的时间状语从句注意:(1) before (在之前):引导的从句不再用否定的谓语。( 2)当主句用将来时,从句总是用现在时;如果before 引导的从句谓语用的是过去时。则主句动词多用过去完成时,这样以便体现动作发生的先后。(3) after (在之后):表示主句动作发生在从句动作之后。如果主句用的是过去时,则从 句多用过去完成时。例如:It will b
7、e four days before they come back.他们要过四天才能回来My father had left for Canada just before the letter arrived.我父亲恰好在信到之前去加拿大了。After we had finished the work, we went home.完成工作之后,我们回家了(从句用过去完成时,主句用一般过去时)5. 由 as soon as ,immediately, directly ,instantly, the moment, the instant, the minute,等引导的时间状语从句:这些连词都
8、表示“一就”。例如:I will go there directly I have finished my breakfast.吃完早饭,我立即到那里去。The moment I heard the news, I went to the school.我一听到消息,马上赶到了学校。As soon as I reach Canada, I will ring you up.我一到加拿大,就给你来电话。注意 hardly (scarcely , rarely ) when,before , no sooner than 相当于 as soon as 之意。主句用过去完成时,从句用一般过去时态。当
9、hardly , scarcely, rarely 和 no sooner 位于句首时,主句应用倒装语序。例如:Hardly had I sat down when he stepped in , 我刚坐下,他就进来了。二、原因状语从句原因状语从句表原因,常见的引导词有:because (因为),since (既然),as (既然),for(因为)1 .becausey 引导的原因状语从句一般放于主句之后,because 表示直接原因,语气最强,回答why引导的疑问句必须使用because。I do it because I like it.Why didn t he come yesterd
10、ay?Because he had something important to do.注意 "notbecause”结构中的not否定的是because引导的整个从句,例如: Thecountry is not strong because it is large.国强不在大.2 Since 引导的原因状语从句一般位于主句之前,表示已知的、显然的理由。通常被翻译成“既然”,较为正式,语气比 because 弱。Since you are free today, you had better help me with my mathematics,既然今天你休息,你最好帮我补习数学。
11、3 .as 引导原因状语从句时表示附带说明的“双方已知的原因”,语气比 since 弱,较正式,位置 较灵活,常放于主句之前。As it is raining, you d better take a taxi ,既然在下雨,你最好乘出租汽车。4 . for 引导的原因状语从句并不说明主句行为发生的直接原因,只提供一些辅助性的补充说明,for 引导的原因状语从句只能放于主句之后并且必须用逗号将其与主句隔开。He could not have seen me, for I was not there.他不可能见过我,因为我不在那里。三、条件状语从句引导条件句常用的连词有if (如果),unles
12、s (如果不,除非)等,条件状语从句和时间状语从句一样,表示将来要用一般现在时态。We won t let you in unless you show your pass.If you fail again this time,what will you do?( 1 ) if 引导的条件状语从句表示将来时,要用一般现在时代替,主句仍使用一般将来时态。( 2)将if 引导的宾语从句和状语从句进行混淆考查,宾语从句中的if 表示“是否”,可以使用一般将来时。四、让步状语从句让步状语从句表示“虽然,即使,尽管”。引导词有 although , though , even though, even
13、 if 都表示“虽然,即使,尽管”之意。主句中不能用 but,但可用yet、Though 和 although 语气较弱(其中的though 比 although 通俗,不如although 正式),evenif 和 even though 带有强调意味而显得语气更强。例如:Although they are poor ,they are happy yet.虽然他们很穷,但很快乐The article is very important though it is short.那篇文章虽然很短,但很重要。Even though it was raining, she walked to wor
14、k.即使下雨,她也是走着去工作的。I ll visit him this evening even if I can stay only a few minutes.今晚我将去拜访他,即使我只能停留一小会儿。注意 though 引导的让步状语从句的用法比较特殊,它可以倒装,也可以不倒装。五、地点状语从句地点状语从句常由where 和 wherever 引导,通常可置于主句之前或之后。如: We should go where(ver) we are most needed, 我们要去最需要我们的地方。有志者,事竟成。Where there is a will, there is a way.六
15、、目的状语从句目的状语从句通常由so that, in order that 引导,所引导的从句通常放在主句后面。目的状语从句中的谓语常含有may (might),can (could),shall ,will等情态动词。如: He always takes a seat in the first row so that/in order that he can hear better.= In order that he can hear better, he always takes a seat in the first row.为了听得更清楚,他总是坐前排的座位。七、结果状语从句结果状
16、语从句常由 so that, so that, such that等引导,放在主句之后, sothat与 such that句型在一定条件下可转换。如: He made such an excellent speech that everyone admired him.= He made so excellent a speech that everyone admired him.他的演讲如此精彩以至于每个人都很钦佩他。注意 so that 引导结果状语从句和目的状语从句的辨别so that 从句之前有个逗号的常为结果状语从句,因表示某一行为带来的结果,从句中的时态常为过去式;so tha
17、t 从句中有may( might ),can( could ), should, will 等情态动词的通常是目的状语从句。如: I wrote as clearly as possible, so that I got high marks.(目的 )我尽可能地写清楚些,这样可以得高分。He went to the lecture early so that he could get a good seat.(目的)他很早就去听报告了,以便可以找到一个好座位。(结果)他很早就去听报告了,He went to the lecture early, so that he got a good s
18、eat. 这样他就找到一个好座位。八、比较状语从句1 .比较状语从句常由as -as, not so ( as) , than引导。比较从句部分常为省略句。如: His brother is as handsome as he (is)/him.(非正式英语中可用宾格him) 他弟弟和他一样英俊。He swims faster than any other student in his class(does).他比班上其他任何人都游得快。2 .通常把the more - the more结构也归为比较从句,意为:"越一越"。如: The harder you work, t
19、he greater progress you ll make. 你越努力学习,就会取得越大的进步。The less she worried, the better she worked.她担心得越少,就工作得越好。九、方式状语从句第 4 页 共 9 页1 .方式状语从句常由(just ) as (像),as if/though(好像)引导,表示动作的方式。如:Do exactly as the doctor says.一定要按照大夫的话去做。He walked slowly as if/though he had hurt his leg.他慢慢地走着,仿佛是腿受了伤。注:在非正式问题中有时
20、会用like代替as引导方式从句。2 .as if/though引导的状语从句,若描述非事实情况,常用虚拟语气,若描述的是实际情况,用陈述语气。如:She treats the orphan as if/though he was her own child.她对待孤儿就像是她自己的孩子一样。(他是孤儿,当然就不是她亲生孩子,故用虚拟语气。)It looks as if/though it ' s going to rain.看起来天像是要下雨了。(本句用的是陈述语气,说明天真象是要下雨了。)实战演练(2 X 50)计分:1. I don ' t know if it tomo
21、rrow ,if it , we won ' t go on a picnic.A. rains; rainsB. will rain; rainsC. will rain; will rain2. We can ' t go to the zoo the weather is fine tomorrow.A. unless B. if C. because3. Just work hard,your dream will come true.A. but B. and C. or4. Don ' t cross the street the traffic light
22、s are green.A. after B. until C. when5. they may not succeed, they will try their best.A. Though B. Because C. Unless6. We will have no water to dink we don ' t protect the earth.A. until B. before C. if7. Luckily, all the students got out of the teaching building if fell down. A. until B. befor
23、e C. after8. My grandma didn ' t go sleep I got back home.A. where B. until C. as soon as9. Uncle Wang gave all his savings to the Hope School he himself was not rich.B. asA. becauseifC. though10. You ' ll do better you are more careful with your spelling.A .if B. before C. although11. The s
24、ports meeting will continue it rains this afternoon.A. if B. since C. unless12. I ' ll give her the message she comes back.A. till B. before C. as soon as13. Jim is going to be a doctor when he.A. will grow upB. growsupC. grow up14. Did you catch what the teacher said?No. She spoke so fast I cou
25、ldn ' t hear her very clearly.A .which B. that C. when15. The teacher speaks very loudly all the students can hear her.A. so that B. because C. since16. Study hard,you will catch up with your classmates.A. andB. orC. but17. Several days has passed the terrible earthquake happened in Japan.A. aft
26、erB. sinceC. as18. It ' s raining outside. Don ' t leave it stops.A. When B. since C. until19.1 t ' s difficult to make her dream come true, but she never gives up.A. ThoughB. /C. Because20 .you go to the party, you will have a good time.A. If B. Though C. Because21 .- Is WuDong at schoo
27、l today ?- No, he is at home he has a bad cold.A. When B. Though C. Because22 .There are many books on math in the bookshop that he can' t decide which tochoose.A. so B. too C. such23 .He got up early he could get to school on timeA. even though B. as if C. so that24.She is short she can' t
28、reach the buttons of the liftA .so, that B. such, that C. too, to25. -Mum, what did the doctor say ?-He asked me to live the air is fresher.A. where B. when C. because26. The piano in the other shop will be,but.A. cheaper ; not as better B. more cheap; not asbetterC. cheaper ; not as good27. All of
29、us haven ' t seen Mike he left our city.A. when B. until C. since28. they are poor, yet they are very honest.A. Because B. Although C. When29. 一What was the party like?- Wonderful. It ' s years I enjoyed myself so much.A. after B. before C. since30. Why do you want a new job you got such a g
30、ood one already?A. thatB. where C. when31. You will be late you leave immediately.A. unlessB. untilC. if32. We won' t give up we may fail ten times.A. even ifB. sinceC. whether33. The new secretary is supposed to report to the manager as soon as sheA. will arriveB. arrivesC. is arriving34. The v
31、olleyball match will be put off if it.A. will rain B. rains C. rained35. It rained heavily that they didn ' t come.A. as B. too C. so36. I often visited Tian ' an Men Square I was staying in Beijing.A. until B. during C. while37. He always thinks I ' m wrong, I may say.A. no matter whatever B. whatever C. what第7页共9页38. the rain has stopped, let s continue to work.A. Because B. If C. That39. They waited it was darkA. until B for C. because40. You will catch a cold put on more clothes.A. if you don t B.
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 2025年远程医疗服务在分级诊疗中的政策支持与挑战应对报告
- 村委会承包水田合同协议
- 村里的股权转让合同范本
- 环评合同终止协议书模板
- 电商代运营收费合同范本
- 环保案件调解协议书范本
- 经济法劳务合同补充协议
- 砖厂购买煤夹子合同范本
- 稀土厂废料出售合同范本
- 项目停工解除协议书范本
- (2025)汽车驾驶员高级技师基本理论知识考试题附含答案
- 轴线翻身护理技术课件
- 中国信息通信研究院-算力中心服务商分析报告(2025年)
- 冀教版 三年级 数学 上册 第一单元《第1课时 倍的认识》课件
- 护理质量管理评价标准考核试题(附答案)
- 2025年青海公务员考试笔试试题(含答案)
- 酒店服务意识培训材料
- DB42∕T 2232-2024 湖北省水利工程护坡护岸参考设计图集
- 安徽国元农业保险股份有限公司招聘笔试题库2025
- GB/T 2820.5-2025往复式内燃机驱动的交流发电机组第5部分:发电机组
- 水泥碳排放管理制度
评论
0/150
提交评论