条件状语从句练习题及答案

条件状语从句练习题及答案 精品文档 条件状语从句练习题及答案 表示在某种条件下某事很可能发生。 If we pay much attention to the earth, well have a better world. 如果我们多关爱地球，就会拥有一个更美好的世界 If it rains tomorrow, what shall we do? 如果明天下雨，我们怎么办, 注意:if还可以引导虚拟条件句，表示不可实现的条 件，从 句中多用一般过去时或过去完成时。 What would happen if there were no water ? 如果没有水会怎样 , 2.unless引导的条件状语从句 unless 的意思是如果不，除非。可与if.not互换。 You will fail in English unless you work hard. 你英语考试会不及格的，除非你更加努力。 3.as /so long as引导的条件状语从句 as /so long as意思是“只要” So long as youre happy,i will be happy. 只要你高兴，我就高兴。 4.once 引导的条件状语从句 once 引导的条件状语从句，意为“一旦. ，就”， 1 / 17 精品文档 从句可置于主句前或后 Once you begin,never stop. 一旦开始，就绝不要停止 Maths is easy to learn once you understand the rules. 一旦你理解了规则，数学就不难学了。 提示: 在条件状语从句中，用一般现在时代替一般将来时，用一般过去时代替 过去将来时。 If the weather is bad next week, well put off the climbing. 如果下周天气不好，我们将推迟爬山。 2013-7-22 2013-7-23 2013-7-24 2013-7-25 状语从句 由从句担任的状语，在句子中可修饰谓语、形容词、副词或是整个句子，它可 以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。状语从 句是一较大的语法项目，也是近几年高考题中常见的一个重要试点。高考中已考查 了时间、让步、地点、条件、目的等状语从句，这些从句仍是今后高考热点，应作 充分准备。同时对方式状语从句也应引起重视。 2 / 17 精品文档 时间状语从句 表示时间的状语从句可由when, as, while, whenever, after, before, till , since, once, as soon as , by the time, no sooner , than, hardly , when, every time等引导。 e.g. When I came into the office, the teachers were having a meeting. He started as soon as he received the news. Once you see him, you will never forget him. No sooner had I gone to bed than I went to sleep. 原因状语从句 原因状语从句是表示原因或理由的，引导这类从句的 最常用的连词是 because, since, as , now that等，for 表 示因果关系时为并列连词，语气不如because 强。 e.g. He is disappointed because he didnt get the position.As it is raining, I will not go out. Now that you mention it, I do remember. 地点状语从句 引导地点状语从句的连词是where 和 wherever 等。 e.g. Sit wherever you like. Make a mark where you have a question. 目的状语从句 引导目的状语从句最常用的词是so, so that, in 3 / 17 精品文档 order that, in case等。 She has bought the book in order that she could follow the TV lessons. He left early in case he should miss the train. 结果状语从句 结果状语从句是表示事态结果的从句，通常主句是原 因，从句是结果。由so that , so , that, such , that 等引导。 e.g. She was ill, so that she didnt attend the meeting.He was so excited that he could not say a word. She is such a good teacher that everyone admires her. 条件状语从句 条件状语从句分真实性与非真实性条件句。引导条件 状语从句的词主要有if, unless, so long as, on condition that, so far as, if only 。注意 : 条件从句 中的 if 不能用 whether 替换。 e.g. If he is not in the office, he must be out for lunch. You may borrow the book so long as you keep it clean. So far as I know, he will be away for three months. You can go swimming on condition that you don t go too far away from the river bank. If he had come a few minutes earlier, he could 4 / 17 精品文档 have seen her. 让步状语从句 让步状语从句可由although, though, as, even if , however, whatever, whether , or, no matter who 等引导。注意 :as 引导的让步状语从句一般是倒装 的。 e.g. Though he is a child, he knows a lot.Child as he is, he knows a lot. Whatever you say, Ill never change my mind. 方式状语从句 方式状语从句常由as, as if , the way, rather than等引导。 e.g. You must do the exercise as I show you. He acted as if nothing had happened. 比较状语从句 比较状语从句常用than, so , as, the more , the more 等引导。 e.g. I have made a lot more mistakes than you have. He smokes cigarettes as expensive as he can afford. The busier he is, the happier he feels. 使用状语从句时要注意的几个问题 1、在时间和条件从句中，主句是一般将来时，从句 通常用一般现在时表示将来。 e.g. We ll go outing if it doesnt rain tomorrow. 5 / 17 精品文档 I ll write to you as soon as I get to Shanghai.、有 些时间、地点、条件、方式或让步从句，如果从句的主语与 主句主语一致，从句的谓语又包含动词be ，就可省略从句 中的“主语+ be”部分。 e.g. When still a boy of ten, he had to work day and night.If asked you may come i n. If necessary Ill explain to you again.、注意区分不同 从句: 引导 的是什么从句，不仅要根据连词，还要根据判别。以where 为例，能引导多种从句。 e.g. You are to find it where you left it. I dont know where he came from. This place is where they once hid. 选择填空 : 1. I ll let you know _ he comes back. A. beforeB. because C. as soon as D. although 2. She will sing a song _ she is asked. A. if B. unlessC. forD. since 3. We will work _ we are needed. A. whenever B. because C. sinceD. wherever 4. Read it aloud _ the class can hear you. A. so thatB. if C. when D. although 5._ you go, dont forget your people. 6 / 17 精品文档 A. WheneverB. However C. Wherever D. Whichever 6. It is about ten years _ I met you last. A. since B. forC. when D. as 7. They will never succeed, _ hard they try. A. because B. however C. when 8. _ still half drunk, he made his way home. A. WhenB. Because C. Though 9. _ she was very tired, she went on working. A. AsB. Although C. Even 10. Busy _ he was, he tried his best to help you. A. asB. whenC. since 11. I learned a little Russian _ I was at middle school. A. though B. although C. as if 12. _ we got to the station, the train had left already. A. If B. UnlessC. Since 13. _ the rain stops, we 11 set off for the station. A. BeforeB. UnlessC. As soon as 14. She was _ tired _ she could not move 7 / 17 精品文档 an inch. A. so, that B. such, that C. very, that 15. We didn t go home _ we finished the work. A. since B. untilC. because 16. I ll stay here _ everyone else comes back. A. even if B. as though C. beca