初中英语初二状语从句.doc

第十五讲 状语从句综合 姓名_学校_年级_【学习目标】：1，通过听说训练提升英语交际能力 2，复习重点语法，并进行题型综合训练【重点语法】考点直击：1. 时间状语从句2. 条件状语从句3. 让步状语从句名师点睛：用来修饰主句中的动词，副词和形容词的从句叫状语从句。1. 时间状语从句(1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。例如：It was raining hard when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along the lake, he sang happily.He had learned a little Chinese before he came to China.After he finished middle school, he went to work in a factory.(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。例如：Ill ring you up as soon as I get to New York.I will tell him everything when he comes back.He wont believe it until he sees it with his own eyes.(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到时”，谓语动词只能用延续性动词。如果主句用否定式，其含义是“直到才”, “在以前不”, 谓语动词可用瞬间动词。例如：The young man read till the light went out.Lets wait until the rain stops. We wont start until Bob comes. Dont get off until the bus stops.2. 条件状语从句(1)条件状语从句通常由if, unless, aslongas（除非；只要），supposing（假设），onconditionthat（条件是），incase（如果）引导。例如：What shall we do if it snows tomorrow?Dont leave the building unless I tell you to.(2)在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。例如：Ill help you with your English if am free tomorrow.He wont be late unless he is ill.(3)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。例如：Hurry up, or youll be late.=If you dont hurry up, youll be late.Study hard and you will pass the exam.=If you study hard, you will pass the exam.3. 让步状语从句(1)让步状语从句通常由although, though等连词引导。例如：Though he is young, he knows a lot.Although I am tired, I must go on working.(2)although(though)不能用在同一个句子中。例如：我们不能说：Though it was raining hard, but he still went out.应该说：Though it was raining hard, he still went out.或It was raining hard, but he still went out.【经典例题】1. (2004年北京市海淀区中考试题) You will stay healthy _ you do more exercise, such as running and walking. A. if B. how C. before D. where 答案：A。该题考查的是引导状语从句的从属连词的选择。从意思上看，从句应是一个条件状语从句，在这四个选项中只有if能引导条件状语从句，所以选A。2. (2004年江西省中考试题) -Shall we go on working? -Yes, _ I prefer to have a rest. A. when B. if C. because D. though 答案：D。该题考查的是引导状语从句的从属连词的选择。从意思上看，只有选though才能说得通。3. (2004年徐州市中考试题) None of us knew what had happened _ they told us about it. A. when B. until C. after D. though 答案：B。该题考查的是引导状语从句的从属连词选择。本句的意思是“在以前我们没人知道这件事。”要表达着一意思应用“notuntil” 这一句型。4. (2004年泉州市中考试题) -I hope youll enjoy your trip, dear! -Thank you, mum. Ill give you a call _ I get there. A. until B. as soon as C. since D. till 答案：B。该题考查的是引导状语从句的从属连词的选择。本题的意思是“一到那里，我就给你打电话。”要表达这个意思应选用as soon as。【经典练习】一. 单项填空1. _ hes old, he can still carry this heavy bag. A. Though B. Since C. For D. So2. -Do you know if he _ to play basket ball with us? -I think he will come if he _ free tomorrow. A. comes; is B. comes; will be C. will come; is D. will come; will be3. In the zoo if a child _ into the water and cant swim, the dolphins may come up _ him. A. will fall; to help B. falls; to help C. will fall; help D. falls; helping4. We will stay at home if my aunt _ to visit us tomorrow. A. comes B. come C. will come D. is coming5. The police asked the children _ cross the street _ the traffic lights turned green. A. not; before B. dont; when C. not to; until D. not; after6. Ill go swimming with you if I _ free tomorrow. A. will be B. shall be C. am D. was7. You should finish your lessons _ you go out to paly. A. before B. after C. when D. while8. You wont catch up with your classmates _ you work harder. A. and B. or C. unless D. if 9. The sports meet will continue _ it rains this afternoon. A. if B. since C. as soon as D. unless二. 根据中文意思完成下列英语句子1. 只要我们竭尽全力，父母就会满意我们的表现。 Our parents will be pleased with our performance _ _ _ we try our best.2. 你一到上海就给我打个电话好吗？ Will you please call me _ _ _ you get to Shanghai.3. 虽然她很忙，他还坚持自学英语。 _ _ _ _, she kept on learning English by herself.4. 他长大后相当一名记者。 He wants to be a journalist _ _ _ _.5. 如果人人为保护环境做出贡献，世界将会变得更美好。 _ _ _ _ _ to protecting the environment, the world will become much more beautiful.【课后作业】1. I hurried _ I wouldnt be late for class. A. since B. so that C. as if D. unless2. When you read the book, youd better make a mark _ you have any questions. A. which B. that C. where D. though3. The teacher raised his voice _ all the students could hear him. A. for B. so that C. because D. in order4. He took off his coat _ he felt hot. A. because B. as C. if D. since5. It is _ that wed like to go out for a walk. A. a lovely day B. too lovely a day C. so lovely a day D. such lovely a day6. Mary had _ much work to do that she stayed at her office all day. A. such B. so C. too D. very7. _ I felt very tired, I tried to finish the work. A. Although B. Because C. As D. As if8. _ the day went on, the weather got worse. A. With B. Since C. While D. As9. _ well you can drive, you must drive carefully. A. So long as B. In order that C. No matter how D. The moment10. Write to me as soon as you _ to Beijing. A. will get B. get C. getting D. Got难度提高题状语从句有很多，其中时间状语从句、条件状语从句是最主要的。它的时态由主从句相呼应来决定，条件状语从句表达将来的情况，但主句为一般将来时，从句为一般现在时态；时间状语从句则“主将从现，主过从过”，过包括一般过去时和过去进行时两种情况。热身训练：1.The children were leaving school on Tuesday _ they saw an accident。A.when B.whileC.because D.after2.We wont go to the park _ it is fine tomorrow。A.if B.whenC.because D.unless3.Well see Uncle Wang this Sunday if it _。A.wont rain B.isnt rainC.doesnt rainD.didnt rain4.What was the party like?Wonderful. Its years _ I enjoyed myself so much。A. after B.whenC. before D. since5.None of them knew it _ the teacher told them。A. when B. untilC. after D. thoughII. ClozeThe computer is fast, and never makes a mistake, while people are too slow, and full of mistakes sometimes. Thats _1_ people often say when _2_ talk about computers. For over a quarter of a century, scientists have been _3_ better and better computers. Now a computer can _4_ a lot of _5_ jobs wonderfully. It is _6_ used in factories, hospitals, post offices and airports. A computer can report, decide and control in almost _7_ field. Many computer scientists are thinking of _8_ the computer “think” like a man. With the help of a person, a computer can _9_ pictures, write music, talk with people, play chess, recognize voices, translate languages and so on. Perhaps computers will _10_ really think and feel. Do you think the people will be afraid _11_ they find that the computer is too clever to listen to and serve the people? No, people will _12_ better use of the computers