2025年英语中考语法形式主语句式精讲&专项练习

中考语法形式主语句式精讲&专项练习卷一份 1. 定义： 当动词不定式、动名词或名词性从句作主语时，为避免句子头重脚轻，通常用 it 作形式主语，而把真正的主语放在句末。 2.常见句型结构 （1）It’s + 形容词 / 名词 +（for sb. /sth）+ to do sth：当形容词是描述事物的特征、性质时，用 for sb.。例如 “It's necessary for students to do homework every day.”（对学生来说每天做作业是必要的）。 （2）It’s + 形容词 + of sb. + to do sth：若形容词是描述人的品德、特征，如 kind, nice, clever 等，用 of sb.。比如 “It's very kind of you to help me with my English.”（你帮我学英语真是太好了）。 （3）It’s + 形容词 / 名词 + doing sth：常见的形容词和名词有 no use, no good, useless 等。例如 “It is no good waiting for him here.”（在这里等他没有好处）。 （4）It + be + 过去分词 + that 从句：常见的过去分词有 said, reported, believed, known 等。如 “It is reported that there will be a heavy rain tomorrow.”（据报道明天会有大雨）。 （5）It + be + 特殊动词 / 动词短语 + that 从句：常见的特殊动词或短语有 seem, happen 等。例如 “It happened that I was out when he called.”（他打电话时我碰巧出去了）。 （6）It + 不及物动词 + that 从句：如 “It appears that he is very tired.”（他似乎很累）。 3.考点及易错点 （1）for sb. 和 of sb. 的区别：这是中考常考的易错点。判断用 for 还是 of，关键看形容词是描述事物还是人。若形容词描述事物特征，用 for sb.；若描述人的品质，用 of sb.。 （2）形式主语与真正主语的搭配：要注意一些固定搭配，如 It takes sb. some time to do sth.（做某事花费某人一些时间），不能误用其他形式。例如不能说 “It spends sb. some time to do sth.”。 （3）主语从句中引导词的使用：在主语从句中，that 虽无实际意义，但在句首引导主语从句时一般不能省略；whether 可以引导主语从句，表示 “是否”，而 if 一般不引导主语从句。如 “Whether he will come is still unknown.”（他是否会来还不知道），不能用 if 替换 whether。 中考语法形式主语句式专项练习卷 一、单项选择 1. It is important ______ us to learn English well. A. of B. for C. with D. to 2. It’s very kind ______ you to help me with my math. A. of B. for C. to D. with 3. It’s no use ______ over spilt milk. A. cry B. to cry C. crying D. cried 4. It ______ that he is a famous singer. A. says B. is said C. said D. was said 5. It seems ______ he has passed the exam. A. that B. if C. whether D. what 6. It took him two hours ______ his homework. A. finish B. finishing C. to finish D. finished 7. It is necessary ______ a foreign language. A. learn B. learning C. to learn D. learned 8. It’s a waste of time ______ computer games all day. A. play B. to play C. playing D. played 9. It ______ that there will be a meeting tomorrow. A. reports B. is reported C. reported D. was reported 10. It is polite ______ to the old. A. to listen B. listen C. listening D. listened 11. It’s difficult ______ the problem. A. solve B. to solve C. solving D. solved 12. It is said ______ the movie is very interesting. A. that B. what C. which D. who 13. It seems ______ he is angry with me. A. like B. as C. that D. if 14. It takes me half an hour ______ to school every day. A. walk B. walking C. to walk D. walked 15. It’s wrong ______ others’ homework. A. copy B. to copy C. copying D. copied 二、用所给词的适当形式填空 1. It is easy for him ______ (answer) the question. 2. It’s nice of you ______ (help) me. 3. It’s no good ______ (smoke). 4. It is reported that a new bridge ______ (build) in our city next year. 5. It seems ______ (rain) soon. 6. It took them three days ______ (complete) the work. 7. It is important ______ (protect) our environment. 8. It’s a waste of money ______ (buy) expensive clothes. 9. It is said that he ______ (win) the first prize in the competition. 10. It is polite ______ (give) up your seat to the old. 三、句型转换 1. To learn English well is important. (改为形式主语句式) ______ ______ important ______ ______ English well. 2. It is necessary for us to clean the classroom every day. (对画线部分提问) ______ ______ it necessary for us ______ ______ every day? 3. It seems that he is happy. (改为同义句) He seems ______ ______ happy. 4. It took him two hours to do his homework. (对画线部分提问) ______ ______ did it take him to do his homework? 5. It is said that he is a good student. (改为同义句) He is said ______ ______ a good student. 四、根据汉语意思完成句子 1. 对我们来说，保持健康很重要。 It’s important ______ us ______ ______ healthy. 2. 你能帮我真是太好了。 It’s very kind ______ you ______ ______ me. 3. 整天玩电脑游戏是浪费时间。 It’s a waste of time ______ ______ computer games all day. 4. 据说他已经去北京了。 It is said that he ______ ______ to Beijing. 5. 似乎要下雨了。 It seems ______ ______ ______ rain. 五、书面表达 请以 “It is important to protect the environment” 为题，写一篇短文，谈谈保护环境的重要性以及我们可以采取的措施。 要求：1. 语句通顺，语法正确； 2. 80 词左右。 ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 答案： 中考语法形式主语句式专项练习卷答案 一、单项选择 1. B 2. A 3. C 4. B 5. A 6. C 7. C 8. C 9. B 10. A 11. B 12. A 13. C 14. C 15. B 二、用所给词的适当形式填空 1. to answer 2. to help 3. smoking 4. will be built 5. to rain 6. to complete 7. to protect 8. to buy 9. has won 10. to give 三、句型转换 1. It is；to learn 2. What is；to do 3. to be 4. How long 5. to be 四、根据汉语意思完成句子 1. for；to keep 2. of；to help 3. to play 4. has gone 5. that it will 五、书面表达（参考范文） It is important to protect the environment In modern society, protecting the environment is quite important. It is important because the environment offers us fresh air, clean water and resources. Without it, our health and life will be in trouble. We can do small things to help. For example, we can recycle waste, use cloth bags instead of plastic ones, and walk or take buses more. Let’s act now to make the earth better. 学科网（北京）股份有限公司 $$