Unit 7 grammar堂清堂测-2024-2025学年沪教牛津版英语八年级上册

八年级英语学科课堂学案 课题：Unit 7 Grammar 班级 姓名 使用时间： 年 月 日 一、观察下列句子，复习if从句的几种用法； ( ① W e will see the sunrise on the top of the Guangzhou Tower if you get up early. ② Come to Tian He Mall, if you like shopping. ③ We can go on a picnic in Yuexiu Park if i t stops raining. ＊ ④ I f it rains , the ground is wet. ) 1. 在条件状语从句中，if从句常用_________________时态，主句常用_________________时态，我们称之为“______________________”。 2. 主句部分可以用四种方式表达: ① _____________________ ② ______________________ ③ _____________________ ＊④ ______________________ ＊3. 第④句“it rains”导致的必然结果是___________________________, 所以当条件与结果之间存在必然的联系时，主句用__________________时态。 二、观察例句，掌握if…not结构和unless条件句互换。 ( ① If you do not work hard, you will not succeed. ② Unless you work hard, you will not succeed. ) 1. if + 否定式动词（not）= unless + _____________ （肯定式/否定式）动词。 2. unless引导的从句通常用_______________时态，主句用________________时态。 三、实战操练 （一）用所给词的适当形式填空: 1. If you boil the water, it __________(become) hot. 2. The wood ___________(float) if you put it on water. 3. If you plant seeds in the soil, they __________(grow). 4. If there __________(be) fewer trees, there _______________( be) more pollution. 5. If she ___________(get) up late, she ____________ ( can /not catch) the early bus. 6. Please __________(wait) for me if I ___________(be) late tomorrow morning. （二）按要求对下列句子进行合并转换。 1. If you are not brave, you will lose your last chance. =__________ you are ___________, you will lose your last chance. 2. Unless you go to bed early, you will feel tired. = _________ you __________ go to bed early, you will feel tired. 3. ____________________(除非下雨)，the crops will die. (unless) 4._______________________(如果你明天不早些来), he will leave. (if…not) （3） 用if或 unless填空。 1.__________ you have a few more days’ rest, you will feel better. 2. Your trip won’t be perfect, ___________ you get enough sleep, food and rest. 3.In summer, food gets bad easily ___________ it is put in the fridge. 4.Mum won’t let me watch TV __________I don’t finish your homework. 5.________ you ___________ ( not practise) playing the piano every day, you can’t improve your skills. 6.Your memory ______________(not become) better, __________ you _________(exercise) your brain. ＊（四）用自己的话完成下面的句子。 1. If I don’t have time tomorrow, _______________________________________. 2. Take an umbrella with you, if ________________________________________. 3. We won’t have a picnic next weekend, if________________________________. 4. You won’t be successful unless ________________________________________. 5. Unless you remember his name, _______________________________________. （五）单项选择。 1. I won’t visit him if he ______ here next Sunday. A. will come B. comes C. is coming D. came 2. If we put the water into the fridge, it _________ into the ice. A. will turn B. turns C. turn D. is turning 3. You will be late __________ you hurry up. A. after B. unless C. when D. if 4. It _________ if you put salt into the water. A. disappears B. disappear C. will disappear D. has disappeared 5. Please let me know if Mr. Smith _______ back. A. comes B. will come C. came D. coming 6.– Would you like to go bike riding with us tomorrow? -- Sure, _______ I am busy. A. until B. since C. when D. unless 7. What will you do if you _____ to the old folk’s home visit? A. go B. went C. going D. will go 8. If it __________, we ________go to the park. A. is rain; won’t B. is rainy, don’t C. rain; don’t D. rains; won’t 9. If you ___ heart disease, you _______ go swimming. A. will have; will shouldn’t B. have; shouldn’t C. will have; shouldn’t D. have; will shouldn’t 10. I don’t know if she _________ to the party. If she _________, I will tell you. A. comes; comes B. will come; will come C. comes; will come D. will come; comes 1 学科网（北京）股份有限公司 学科网（北京）股份有限公司 一、 1. 在条件状语从句中，if 从句常用一般现在时态，主句常用一般将来时态，我们称之为“主将从现”。 2. 主句部分可以用四种方式表达: ① will + 动词原形 ② be going to + 动词原形 ③ shall + 动词原形（主语为第一人称 I 或 we 时） ④ 祈使句 3. 第④句“it rains”导致的必然结果是“you'll get wet”，所以当条件与结果之间存在必然的联系时，主句用一般现在时态。 二、 1. if + 否定式动词（not）= unless + 肯定式动词。 2. unless 引导的从句通常用一般现在时态，主句用一般将来时态。 三、实战操练 （一）用所给词的适当形式填空: 1. If you boil the water, it will become hot. 2. The wood will float if you put it on water. 3. If you plant seeds in the soil, they will grow. 4. If there are fewer trees, there will be more pollution. 5. If she gets up late, she won't be able to catch the early bus. 6. Please wait for me if I am late tomorrow morning. （二）按要求对下列句子进行合并转换。 1. If you are not brave, you will lose your last chance. = Unless you are brave, you will lose your last chance. 2. Unless you go to bed early, you will feel tired. = If you don't go to bed early, you will feel tired. 3. Unless it rains, the crops will die. 4. If you don't come earlier tomorrow, he will leave. （三）用 if 或 unless 填空。 1. If 2. unless 3. unless 4. unless 5. If; don't practise 6. won't become; if; don't exercise （四）用自己的话完成下面的句子。 1. If I don't have time tomorrow, I won't go shopping with you. 2. Take an umbrella with you, if it rains. 3. We won't have a picnic next weekend, if it rains. 4. You won't be successful unless you work hard. 5. Unless you remember his name, you won't be able to greet him. （五）单项选择。 1. B 解析：if 引导的条件状语从句，遵循“主将从现”，从句用一般现在时，主语是 he，动词用 comes。 2. A 解析：if 条件句，主将从现，主句用 will turn。 3. B 解析：unless 表示“除非”，“You will be late unless you hurry up.”意思是“除非你快点，否则你会迟到”。 4. C 解析：if 条件句，主将从现，主句用 will disappear。 5. A 解析：if 引导的宾语从句，主句是祈使句，从句用一般现在时，Mr. Smith 是第三人称单数，动词用 comes。 6. D 解析：unless 表示“除非”，“Sure, unless I am busy.”意思是“当然，除非我忙”。 7. A 解析：if 引导的条件状语从句，遵循“主将从现”，从句用一般现在时。 8. D 解析：if 条件句，主将从现，第一空从句用 rains，第二空主句用 won't。 9. B 解析：if 引导的条件状语从句，遵循“主将从现”，第一空从句用一般现在时 have，第二空主句用 shouldn't。 10. D 解析：第一句“if she will come to the party”是宾语从句，动作未发生，用一般将来时；第二句“If she comes, I will tell you.”是条件状语从句，遵循“主将从现”。 $$