Unit 3 语法专练 2025-2026学年沪教版五四学制英语八年级下册

沪教五四制八下第三单元语法专练 目的状语从句 第一部分:基本概念 1. 什么是目的状语从句? 目的状语从句 用来表示主句动作发生的目的,说明"为了什么"而做某事。它回答 "Why?" 或 "For what purpose?" 的问题。 结构:主句 + 引导词 + 从句(目的) 含义:"为了……"、"以便……" 2. 基本例句 例句 说明 He studies hard so that he can pass the exam. 他努力学习,以便能通过考试 She got up early in order that she might catch the first bus. 她早起,为了赶上第一班车 I left a message so that he would know where to meet us. 我留了言,这样他就知道在哪里见我们 3. 与结果状语从句的区别 从句类型 核心含义 引导词 例句 目的状语从句 想要达到的目的(未发生) so that, in order that He worked hard so that he could pass.(为了通过) 结果状语从句 已经发生的结果 so, so...that, such...that He worked hard, so he passed.(结果:通过了) 第二部分:目的状语从句的主要引导词 1. so that(以便,为了) so that 是最常用的目的状语从句引导词。 结构 例句 主句 + so that + 从句 I got up early so that I wouldn't miss the train. She saved money so that she could buy a car. 注意:so that 引导目的从句时,从句中常含有情态动词(can, could, may, might, will, would 等)。 2. in order that(为了) in order that 比 so that 更正式,常用于书面语。 结构 例句 主句 + in order that + 从句 He left early in order that he might arrive on time. They trained hard in order that they could win the match. 3. in case(以防,以免) in case 表示"以防万一",目的是为了避免某种不好的情况发生。 结构 例句 主句 + in case + 从句 Take an umbrella in case it rains. I'll keep some water in case we get thirsty. 注意:in case 引导的从句通常不用将来时,用一般现在时表示将来。 4. for fear that(唯恐,以免) for fear that 表示"生怕……会发生",比 in case 更正式。 结构 例句 主句 + for fear that + 从句 She whispered for fear that she might wake the baby. He didn't say anything for fear that he would upset her. 第三部分:so that 与 in order that 的详细用法 1. 时态搭配 主句时态 从句常用情态动词 例句 一般现在时 can / may / will I study hard so that I can pass the exam. 一般过去时 could / might / would He studied hard so that he could pass the exam. 现在完成时 can / may / will He has saved money so that he can buy a house. 2. 否定形式 表示"为了不……"、"以免"时,用 so that... not 或 in order that... not。 结构 例句 so that... not He spoke quietly so that he wouldn't wake the baby. in order that... not She left early in order that she might not miss the train. 3. 与不定式的转换 so that / in order that 引导的目的状语从句可以简化为 in order to 或 so as to 不定式结构,但前提是主句和从句的主语一致。 从句(主语一致) 不定式简化 He studied hard so that he could pass the exam. He studied hard to pass the exam. She got up early so that she might catch the bus. She got up early to catch the bus. They saved money in order that they could buy a house. They saved money to buy a house. 注意:如果主句和从句主语不一致,不能简化为不定式。 I opened the door so that he could come in.(主语不同) I opened the door to come in.(意思变成"我自己进来") 第四部分:目的状语从句的简化形式 1. in order to + 动词原形 in order to 表示"为了",比单独用 to 更正式。 结构 例句 主句 + in order to + 动词原形 He left early in order to arrive on time. In order to + 动词原形,主句 In order to pass the exam, he studied hard. 2. so as to + 动词原形 主句 + so as to + 动词原形 so as to 也表示"为了",常用于口语。 She spoke quietly so as not to wake the baby. He got up early so as to catch the first bus. 3. 否定形式 in order not to / so as not to 表示"为了不……"。 in order not to + 动词原形 He whispered in order not to disturb others. so as not to + 动词原形 She left early so as not to miss the train. 第五部分:目的状语从句的位置 1. 从句放在主句后面(最常见) 主句 + 目的从句 I called him so that he would know the time. She saved money in order that she could travel. 2. 从句放在句首(强调目的) 目的从句,+ 主句 So that he wouldn't be late, he set multiple alarms. In order that everyone could hear, she spoke loudly. 3. 不定式放在句首 To / In order to + 动词,主句 To pass the exam, you must study hard. In order to succeed, we need to work together. 第六部分:常见易错点 易错点1:so that 与 so 混淆 He studied hard, so he could pass the exam.(这是结果,不是目的) He studied hard so that he could pass the exam.(目的) 区分技巧: so that(目的):为了……(计划中,未发生) so(结果):所以……(已经发生) 易错点2:目的从句中漏掉情态动词 He studied hard so that he passes the exam. He studied hard so that he could pass the exam. 目的从句中通常需要情态动词(can, could, may, might, will, would)来表示"可能达到的目的"。 易错点3:in case 的误用 Take an umbrella in case it will rain. Take an umbrella in case it rains. in case 引导的从句用一般现在时表示将来,不用将来时。 易错点4:主语不一致时滥用不定式简化 I opened the door to come in.(意思是"我自己进来",错误) I opened the door so that he could come in. 易错点5:so that 与 in order that 的位置 So that he could pass the exam, he studied hard.(可以,但较少见) He studied hard so that he could pass the exam.(更常见) 第七部分:练习题 Level 1:选择正确的选项 1. He studied hard _ he could pass the exam. A. so that B. so C. because D. if 2. She got up early _ miss the train. A. so that not B. in order not to C. so as to D. in order to 3. Take a map _ you get lost. A. so that B. in order that C. in case D. because 4. He spoke quietly _ wake the baby. A. so as not to B. so that not C. in order to D. so as to 5. I opened the door _ he could come in. A. so that B. so as to C. in order to D. to 6. She saved money _ she could travel around the world. A. so that B. in order to C. so as to D. for 7. He left early _ he might arrive on time. A. in order that B. in order to C. so as to D. to 8. I'll call him _ he forgets the meeting. A. so that B. in case C. in order that D. because Level 2:句型转换(将从句改为不定式结构) 注意:只有主句和从句主语一致时才能转换 1. He studies hard so that he can pass the exam. He studies hard _ _ the exam. 2. She got up early so that she could catch the first bus. She got up early _ _ _ the first bus. 3. They saved money so that they could buy a new house. They saved money _ _ a new house. 4. He spoke slowly so that everyone could understand him.(主语不同,不能转换) (不能转换) 5. She wore warm clothes so that she wouldn't catch a cold. She wore warm clothes _ _ _ _ a cold. 6. He left early so that he might arrive on time. He left early _ _ _ on time. Level 3:改错题(每句有一处错误) 1. He studies hard so that he can passes the exam. _ 2. Take an umbrella in case it will rain. _ 3. She got up early so that she could catches the first bus. _ 4. I opened the door for him to come in.(判断对错) _ 5. He spoke quietly so as not wake the baby. _ 6. They saved money so that they can bought a house. _ 7. She left early in order that she might not to miss the train. _ 8. I'll keep some water in case we will get thirsty. _ Level 4:完成句子(根据中文提示) 1. 他努力学习,以便能通过考试。 He studies hard _ _ _ _ pass the exam. 2. 带上雨伞,以防下雨。 Take an umbrella _ _ _. 3. 她早起是为了赶上第一班车。 She got up early _ _ _ catch the first bus. 4. 他小声说话,以免吵醒婴儿。 He spoke quietly _ _ _ _ wake the baby. 5. 我们存钱是为了买一所新房子。 We are saving money _ _ _ buy a new house. 6. 我留了言,这样他就知道在哪里见我们。 I left a message _ _ he would know where to meet us. Level 5:语境填空 Passage 1:Preparing for an Exam Next week, I have an important exam. I am studying hard _ (1. so that / in case) I can get a good grade. I review my notes every day _ (2. so as not to / so that) forget anything. I also ask my teacher questions _ (3. in order to / in case) understand difficult topics better. I set multiple alarms every night _ (4. so that / in case) I oversleep. I even carry a water bottle with me _ (5. so that / in case) I get thirsty while studying. I want to be fully prepared _ (6. so that / in order to) I won't be nervous during the exam. Passage 2:A Safe Trip When you travel to a new place, it's important to be prepared. You should carry a map _ (7. so that / in case) you get lost. Take some extra money _ (8. so that / in case) you need it. Learn a few local phrases _ (9. so that / in order to) you can communicate with local people. Keep your valuables in a safe place _ (10. so as not to / so that) lose them. Tell someone your travel plans _ (11. so that / in case) they know where you are. These preparations will help you enjoy your trip _ (12. so that / in order to) you can have a worryfree vacation. Level 6:翻译句子 1. 他努力学习,以便能通过考试。 _ 2. 带上雨伞,以防下雨。 _ 3. 她早起是为了赶上第一班车。 _ 4. 他小声说话,以免吵醒婴儿。 _ 5. 我留了言,这样他就知道在哪里见我们。 _ 6. 我们存钱是为了买一所新房子。 _ 7. 他提前离开,以便能准时到达。 _ 8. 我写下地址,以防忘记。 _ 第八部分:综合测试 Section A:单项选择(15题) 1. He studies hard _ he can pass the exam. A. so that B. so C. because D. if 2. Take an umbrella _ it rains. A. so that B. in order that C. in case D. because 3. She got up early _ miss the train. A. so as not to B. so that not C. in order to D. so as to 4. I opened the door _ he could come in. A. so that B. so as to C. in order to D. to 5. He spoke quietly _ wake the baby. A. so as not to B. so that not C. in order to D. so as to 6. They saved money _ they could buy a new house. A. so as to B. in order to C. so that D. for 7. I'll call him _ he forgets the meeting. A. in case B. so that C. in order that D. because 8. She left early _ she might arrive on time. A. in order that B. in order to C. so as to D. to 9. He wore warm clothes _ he wouldn't catch a cold. A. for B. so that C. in order to D. so as to 10. We turned on the lights _ we could see better. A. so that B. so as to C. in order to D. for 11. She wrote down the address _ she forgot it. A. in case B. so that C. in order that D. because 12. He moved to the city _ find a better job. A. to B. so that C. in order that D. for 13. They trained hard _ they could win the match. A. for B. so as to C. in order to D.so that 14. I'll charge my phone _ it runs out of battery. A. in case B. so that C. in order that D. because 15. He left early _ arrive on time. A. for B. so that C. in order that D. in order to Section B:用 so that, in order that, in case, so as to, in order to 填空 1. He studies hard _ he can pass the exam. 2. Take an umbrella _ it rains. 3. She got up early _ catch the first bus. 4. He spoke quietly _ not wake the baby. 5. They saved money _ they could buy a new house. 6. I left a message _ he would know where to meet us. 7. We should leave early _ there's a traffic jam. 8. She wore warm clothes _ she wouldn't catch a cold. 9. He moved to the city _ find a better job. 10. I'll keep some water _ we get thirsty. Section C:句型转换 1. He studies hard so that he can pass the exam. He studies hard _ _ the exam. 2. She got up early so that she could catch the first bus. She got up early _ _ _ the first bus. 3. He runs fast so that he can catch up with the bus. He runs fast _ _ up with the bus. 4. He spoke quietly so that he wouldn't wake the baby. He spoke quietly _ _ _ _ wake the baby. 5. They saved money in order that they could buy a new house. They saved money _ _ a new house. Section D:改错题(5题) 1. He studies hard so that he can passes the exam. _ 2. Take an umbrella in case it will rain. _ 3. She got up early so as to she could catch the first bus. _ 4. I opened the door so that he could come in.(判断对错) _ 5. He spoke quietly so as not wake the baby. _ 第九部分:参考答案 Level 1答案 1. A(so that 引导目的) 2. B(in order not to 为了不) 3. C(in case 以防) 4. A(so as not to 为了不) 5. A(so that 引导目的,主语不同) 6. A(so that 引导目的) 7. A(in order that 引导目的) 8. B(in case 以防) Level 2 答案 1. to pass 2. in order to catch / so as to catch 3. to buy / in order to buy 4. (不能转换,主语不同) 5. so as not to catch / in order not to catch 6. in order to arrive / so as to arrive Level 3 答案 1. He studies hard so that he can pass the exam.(pass 用原形) 2. Take an umbrella in case it rains.(不用将来时) 3. She got up early so that she could catch the first bus.(catch 用原形) 4. 正确(for him to come in 是带逻辑主语的不定式,表示目的) 5. He spoke quietly so as not to wake the baby.(缺 to) 6. They saved money so that they could buy a house.(buy 用原形) 7. She left early in order that she might not miss the train.(去掉 to) 8. I'll keep some water in case we get thirsty.(不用将来时) Level 4 答案 1. so that he can 2. in case it rains 3. so as to / in order to 4. so as not to / in order not to 5. in order to / so as to 6. so that Level 5答案 1. so that 2. so as not to 3. in order to 4. in case 5. in case 6. so that 7. in case 8. in case 9. so that / in order to 10. so as not to 11. so that 12. so that Level 6 答案 1. He studies hard so that he can pass the exam. He studies hard to pass the exam. 2. Take an umbrella in case it rains. 3. She got up early so as to catch the first bus. She got up early in order to catch the first bus. 4. He spoke quietly so as not to wake the baby. He spoke quietly in order not to wake the baby. 5. I left a message so that he would know where to meet us. 6. We are saving money so that we can buy a new house. We are saving money to buy a new house. 7. He left early so as to arrive on time. He left early in order to arrive on time. 8. I wrote down the address in case I forgot it. 综合测试答案 Section A: 1-5 A C A A A 6-10 C A A B A 11-15 A A D A D Section B: 1. so that 2. in case 3. so as to / in order to 4. so as to 5. so that 6. so that 7. in case 8. so that 9. to / in order to 10. in case Section C: 1. to pass 2. in order to catch / so as to catch 3. to catch 4. so as not to / in order not to 5. to buy / in order to buy Section D: 1. He studies hard so that he can pass the exam. 2. Take an umbrella in case it rains. 3. She got up early so as to catch the first bus.(去掉 she could) 4. 正确 5. He spoke quietly so as not to wake the baby. 第十部分:记忆口诀 目的状语从句口诀 so that 和 in order that, 引导目的最常见。 情态动词句中藏, can, could, may, might 记心上。 in case 口诀 in case 表示"以防", 从句时态用现在。 Take an umbrella in case it rains, 这个用法要记牢。 不定式简化口诀 主语相同可简化, to do 就能表目的。 so as to 和 in order to, 否定形式 not to 后。 区分目的与结果 目的从句有情态, 计划之中未发生。 结果从句无情态, 事实结果已成型。 学科网(北京)股份有限公司 $