初中英语条件句讲解 练习及答案.docx

初中英语条件句讲解 练习及答案条件句 一、 考点、热点回顾 1. accept与receive accept “接受”，表示其行为是由主观意愿决定的。 I accepted it without question. 我毫无疑问地接受了它。 We have accepted his proposal. 我已接受了他的建议。 receive “接到、收到、受到”表示其行为与主观意愿无关。 I received a letter from him. 我收到了他的来信。 He received the present, but he did not accept. 他收到了礼物，但没有接受下来。 He received a good education.他受到了良好的教育。 注意 在表示接待、接见时，通常用 receive, 而不用 accept. 如：We often receive foreign guests. 我们经常接待外宾。 2. agree to，agree with与agree on(up on) agree to “同意、应允”通常用于同意某件事情。Do you agree to this plan? He agreed to my proposal.他同意了我的提议。 agree with “同意、赞同”常常表示同某人意见一致，也可表赞同某件事情。还有“适合”之意。如： Do you agree with me ? I agree with all you say.我同意你所说的。 His words do not agree with his actions.他言行不一致。 Too much meat doesnt agree with her. 注意：agree with 不能用于被动语态。 agree on /upon “对取得一致意见”指两方或多方就某个问题取得了一致的意见或达成了某种协议。 After discussion the two sides agreed on the date of the next meeting.经过讨论，双方就下次会议日期达成了协议。 They all agree on the plan.他们对这个计划意见一致。 注意：此句型可转换成agree in doing sth.如： All of them agreed on / upon it. = All of them agreed in doing it. 他们对做这个问题达成了共识。 吃太多肉对她身体不合适。 真实条件句 连接词 条件从句 结果从句 一般将来时-表可能：If he runs, hell get there on time. may/ might/ can-允许/能力：If it stops snowing, we can go out. must/ should-命令，请求，劝告： If you want to lose weight, you must/ should eat less bread. If If + 主语 + 一般现在时 1 一般现在时-客观事实：If you heat ice, it turns to water. 虚拟条件句 虚拟语气表示一种假设的情况，或一种主观的愿望，即动词所表示的动作或状态并非事实，或不可能实现。英语虚拟语气的形式有下列几种： 一、与现在事实相反 连接词 If 如： If he had the time, John would make a trip to China to see the Great Wall. If I were you, I would give up drinking immediately(立即、立刻). If I didnt have a cold, I would go to your birthday party. 条件从句 结果从句 If + 主语 + 一般过去时 主语+ should/would/ could/ might +动词原形 二.与将来事实相反 连接词 If 如： If you should lose, what would you do? If I were to see her tomorrow, I would tell her the truth. 条件从句 If + 主语 + should/would/were to+动词原形 结果从句 主语+ should/would/ could/ might +动词原形 三、与过去事实相反 连接词 If 如： If Id known that it was going to rain, I would never have gone for a walk in the country. If I hadnt had a cold last week, I wouldnt have missed your birthday party. 条件从句 结果从句 If +主语+过去完成时 主语+should/would/could/might+ have+过去分词 二、 典型例题 ( )1. I dont know if it _tomorrow. If it _,we wont go on a picnic. A. rains;rains B. will rain;rains C. will rain;will rain ( )2. In summer , food goes bad easily _ it is put in the refrigerator. A. until B. if C. unless ( )3. -I hear Jack Chan will come to Laiwu next week. -Really? _ he comes, my younger sister will be very happy, AIf BUntil CUnless ( )4. Could we play football in your playground, Sir ? -No,_ you have the principals note. 2 DBefore A.if B.unless C.because D.since ( )5. Many children like fried chicken _it is unhealthy food. A.if B.because C.although ( )6. All the students in Class 5 will climb the mountain if it _ rain tomorrow. A. wont B. dont C. didnt D. doesnt ( )7 -Would you like to go bike riding with us tomorrow? -Sure, _ I am busy. A. since B. unless C. when D. until ( )8. I dont like bread. I wont eat it _ I am very hungry. A. when B. unless C. if ( )9. Youd better look up the new word in a dictionary _ you dont know it. A. if B. that C. though D. whether ( )10. After the meeting, we will have a party. If you _ free, come and join us. A. are B. will be C. were 三、 课后练习 ( )1. Ill go for a walk with you if it _ tomorrow. A. wont rain B. doesnt rain C. will rain D. not rains ( )2. Im waiting for my Mum. _, Ill go shopping with her. A. If she doesnt come B. If she comes C. If she will come D. If she wont come ( )3. -Tommy, do you know if Frank _ to the zoo this Sunday if it _? -Sorry, I have no idea. A. will go; is fine B. goes; is fine C. will go; is going to be fine D. goes; will be fine ( )4. If I _ you, I would wear the shirt and the tie. A. am B. was C. were D. will be ( )5. What would you do if you _ a lot of money? A. had B. have had C. will have D. have ( )6. In Britain, you must be 18 _ you want to drive a car. A. why B. because C. so D. if ( )7. If I _ you, Id take the small apple. A. am B. were C. was ( )8. Susan will not arrive at the airport on time _ she hurries up. A. once B. if C. when D. unless ( )9. If my father _ back, please let me know. A. comes B. will come C. come ( )10. Lets see _we can find some information about the city. A. that B. if C. what D. which ( )11.If I you, I a big house. A. was, would buy B. were, would like to buy 3 C. were, would buy D. was, bough ( )12.If he tomorrow, please tell me. A. come B. comes C. will come D. came ( )13.What would you do if you the lottery( 彩票)? A. win B. won C. are going to win D. have won 4 典型例题 1B 2C3A4B5C6D 7B。考查unless引导的条件状语从句。由关键词Sure可推断“我会和你们一起自行车旅行的，除非我很忙”，故排除A、C、D三项，选B。 8B 9A。考查if引导的条件状语从句。结合题意“如果你不知道那个新词，你最好在字典里查阅它”可排除B、C、D三项，选A。10A 课后练习 1B。在条件状语从句中，从句不能用一般将来时，应用一般现在时，故正确答案为B。 2B 3A。结合题意“汤姆，如果天气好的话，你知道弗兰克这个星期六将去动物园吗？”可知第一个空是宾语从句，要用一般将来时，第二个空是条件状语从句，要用一般现在时，故排除B、C、D三项，选A。 4C 5A。四个选项分别是动词have的四种形式，由关键词would和题意“如果你有很多钱，你会做什么”可知这里考查虚拟语气，故选A。 6D 7B。本题考查虚拟语气的用法。表示与现在事实相反的假设，条件状语从句中的be须用were。 8D9A。考查条件状语从句的时态。因为主语是祈使句，所以从句要用一般现在时，故选A。 10B 11C 12B 13B 5 6