Unit 6 Sunshine for all 语法篇（It is+形容词〔+for, of ...〕+动词不定式）（“导”与“练”） 2025-2026学年译林版英语八年级下册

该初中英语单元复习讲义围绕“it is+形容词(+for/of...)+动词不定式”核心句型，通过表格系统梳理三种基础句型的含义、举例及说明，明确形容词分类（如描述动作特征与人物品质）和for/of的用法区别，同时扩展It作形式主语的其他句型（如It takes sb time to do等），构建清晰的语法知识脉络。 讲义亮点在于“句型转换与验证技巧”的方法指导，如通过“sb+be+adj”验证of/for使用（例：It is kind of you=You are kind），结合否定形式（It’s silly of you not to...）和跨句型转换（如改为so...that从句），培养学生语言运用能力与逻辑思维品质。分层设计基础句型练习与扩展句型应用，帮助不同学生掌握语法规则，支持教师实施精准复习教学。

Unit 6 Sunshine for all 语法篇 关于“‘it is+adjective(+for/of ...)+to-infinitive’句型”语法内容，教材如是说： 句型 含义 举例 说明 it is+adjective+to do sth 做某事 是……的 It is interesting to go fishing.钓鱼真有趣。 该句型中的形容词表示动词不定式 所具备的特征或客观情况。常见的形容词有：cheap、convenient、dangerous、difficult、easy、exciting、expensive、 important、interesting、necessary、normal、possible、useful、 wonderful等。 it is +adjective+for sb+to do sth 对某人来说 做某事是……的 It is necessary for us to learn the spirit of Lei Feng.对我们来说，学习雷锋精 神是必要的。 该句型中的形容词用法和“it is+ adjective+to do sth”句型相似，for引出逻辑主语。 it is+adjective+of sb+to do sth 某人做某事 真是…… It is clever of him to solve the problem. 他真聪明，解决 了这个问题。 该句型中的形容词描述的是人的特征、品质等。常见的形容词有：brave、careless、clever、foolish、 generous、good、helpful、honest、kind、nice、polite、silly、stupid、 wrong等。 注意：“it is+adjective +of sb+to do sth”句型中，of后的宾语与动词不定式之间存在逻辑上的主谓关系， 一般都可以转换成一个of后的宾语充当主语的句子。如： It is kind of you to share some good ideas with me.你真好，和我分享一些好主意。 =You are kind to share some good ideas with me. 一、三种句型详解 句型 详解 例句 It is+adj+to do sth. 表达对做某件事的看法， “做某事是……的”。 a second language.学习一门第二语言是非常有用的。 after school.放学后打篮球很有趣。 其中形容词用来描述动作的特征或客观情况。 It is+adj+for sb+to do sth. 对某人来说 做某事是……的。 the work on time.对我来说，按时完成这项工作有困难。 their homework in time.对学生来说，及时完成作业是必要的。 sb.是动词不定式的逻辑主语(即：动词不定式所表示动作的执行者)；其中形容词用来描述动作的特征或客观情况。 It is+adj+of sb+to do sth. 某人做某事真是……。 the old man cross the road.你帮助那位老人过马路，真是太善良了。 . 他犯这样的错误，真是太蠢了。 sb.是动词不定式的逻辑主语(即：动词不定式所表示动作的执行者)；其中形容词用来描述人的品质或特征。 以上句型中的It为形式主语，用来代替后面真正的主语动词不定式(短语)。 注意：1. 可以在动词不定式前面加上not表示否定。如： It’s silly of you not to forgive others for their faults.你不原谅别人的过错是很愚蠢的。 2. 是用of还是用for，可用“sb+be+adj”句型验证是否成立——成立用of，不成立用for； 3. it’s good for sb to do”表示“对某人有益”，而it’s good of sb to do表示“承蒙……万分感激；某人善良”。如： It’s good for us to help others deal with growth difficulties. 帮助他人处理成长困难对我们是有好处的。 It’s good of you to let me come.承蒙邀请，万分感激。 It’s good of her to care about others.她关心别人，心地很善良。 4. 与其他句型的转换。如： It was selfish of Eddie to eat up all the food. →Eddie was so selfish that he ate up all the food. 埃迪太自私了，他把所有的食物吃完了。 It is very kind of my sister to take care of others. →My sister is kind enough to take care of others.我姐姐照顾别人很善良。 二、It作形式主语的其他句型 句型 详解 例句 It+takes/took sb.+时间+to do 固定句型，表示“花费某人多长时间做某事”。  the work. It+ be +(no good/use等) +doing 做某事是没用的 crying over spilt milk. 覆水难收，后悔无益。 a power cut. Some of the lights run on batteries. 担心停电是没用的。有些灯是靠电池运行的。 It+be+名词+to do或that宾语从句 常用名词：a pleasure, a pity, a shame, an honor, a tradition, one’s duty等。 with you. 和你一起工作很愉快。 we have the chance to work together.我们有机会一起共事，是件幸事。 halfway. 半途而废太可惜了。 I can’t take part in the art show.很遗憾我不能参加这次艺术展。 the beautiful table with a tablecloth.用桌布盖住这张漂亮的桌子真是太可惜了。 I didn’t do well in the competition.真遗憾，我在比赛中表现得不好。 the competition.能参加这场比赛是一种荣幸。 I can serve you. 能为你服务是我的荣幸。 In China, to eat long noodles on their birthday.在中国，对于人们来说，在生日时吃长寿面是一种传统。 families get together on Spring Festival.春节家人团聚是一项传统。 the environment. 保护环境是我们的责任。 we(should)follow the school rules.遵守校规是我们的责任。 It+不及物动词+that宾语从句 常用动词：seem, appear, happen, matter等。 it will rain soon. 似乎很快就要下雨了。 he knows the truth. 看来他知道真相。 I met him on the street.我碰巧在街上遇见了他。 we keep our promise. 我们信守承诺很重要。 注意：It happened when she was seven years old.这件事发生在她七岁的时候。 (“it”不是形式主语) It+be+过去分词+that宾语从句 常用的过去分词：said, reported, believed, known, suggested等。 he is studying abroad. 据说他正在国外留学。 the flood is under control.据报道洪水已得到控制。 health is the greatest wealth.人们认为健康是最大的财富。 light travels faster than sound.众所周知光速比声速快。 we(should)start early tomorrow.有人建议我们明天早点出发。 注意：He thinks .他认为错过了这次聚会很可惜。 (it是形式主语，真正的主语是“that he missed the party(主语从句)”，“a pity”是表语) =He thinks .他认为错过了这次聚会很可惜。 (it是形式宾语，真正的宾语是“that he missed the party(宾语从句)”，“a pity”是宾语补足语) 友情提醒： 1. It+be +a waste of time+doing sth.(高中常用)或It+be +a waste of time+to do sth.(初中常用) In my opinion, it is a waste of time persuading such a person to join us in the activity.(高中) 在我看来，说服这样的人参加我们的活动是浪费时间。 It is a waste of time playing computer games before the final exam.(高中) 期末考试前玩电脑游戏是浪费时间。 It’s a waste of time to spend too much time on the phone.(初中) 花太多时间打电话是浪费时间。 What a waste of time it is to spend too much time on computer games!(初中) 过多的在电脑游戏上花时间是多么的浪费时间啊！ 2. It+be +great fun+doing sth.或It+be +great fun+to do sth. It’s great fun playing golf.打高尔夫球很有趣。(选自《英汉多功能词典 外研社·建宏》) It’s not much fun going to a party on your own.(选自《牛津高阶英汉双解词典 第6版》) 独自一人参加聚会没什么意思。 (初高中常用第二种句型) What great fun it is to have a swim on such a hot day!(高中) 在如此炎热的天气里游泳真快乐啊！ What great fun it is to jump into a river in summer!(初中) 夏天跳进河里游泳真快乐啊！ It is great fun to go fishing. (初中) 钓鱼很有趣。 第 1 页 共 1 页 学科网（北京）股份有限公司 $ Unit 6 Sunshine for all 语法篇 关于“‘it is+adjective(+for/of ...)+to-infinitive’句型”语法内容，教材如是说： 句型 含义 举例 说明 it is+adjective+to do sth 做某事 是……的 It is interesting to go fishing.钓鱼真有趣。 该句型中的形容词表示动词不定式 所具备的特征或客观情况。常见的形容词有：cheap、convenient、dangerous、difficult、easy、exciting、expensive、 important、interesting、necessary、normal、possible、useful、 wonderful等。 it is +adjective+for sb+to do sth 对某人来说 做某事是……的 It is necessary for us to learn the spirit of Lei Feng.对我们来说，学习雷锋精 神是必要的。 该句型中的形容词用法和“it is+ adjective+to do sth”句型相似，for引出逻辑主语。 it is+adjective+of sb+to do sth 某人做某事 真是…… It is clever of him to solve the problem. 他真聪明，解决 了这个问题。 该句型中的形容词描述的是人的特征、品质等。常见的形容词有：brave、careless、clever、foolish、 generous、good、helpful、honest、kind、nice、polite、silly、stupid、 wrong等。 注意：“it is+adjective +of sb+to do sth”句型中，of后的宾语与动词不定式之间存在逻辑上的主谓关系， 一般都可以转换成一个of后的宾语充当主语的句子。如： It is kind of you to share some good ideas with me.你真好，和我分享一些好主意。 =You are kind to share some good ideas with me. 一、三种句型详解 句型 详解 例句 It is+adj+to do sth. 表达对做某件事的看法， “做某事是……的”。 It is very useful to learn a second language.学习一门第二语言是非常有用的。 It is interesting to play basketball after school.放学后打篮球很有趣。 其中形容词用来描述动作的特征或客观情况。 It is+adj+for sb+to do sth. 对某人来说 做某事是……的。 It is difficult for me to finish the work on time.对我来说，按时完成这项工作有困难。 It is necessary for students to finish their homework in time.对学生来说，及时完成作业是必要的。 sb.是动词不定式的逻辑主语(即：动词不定式所表示动作的执行者)；其中形容词用来描述动作的特征或客观情况。 It is+adj+of sb+to do sth. 某人做某事真是……。 It is kind of you to help the old man cross the road.你帮助那位老人过马路，真是太善良了。 It is silly of him to make such a mistake. 他犯这样的错误，真是太蠢了。 sb.是动词不定式的逻辑主语(即：动词不定式所表示动作的执行者)；其中形容词用来描述人的品质或特征。 以上句型中的It为形式主语，用来代替后面真正的主语动词不定式(短语)。 注意：1. 可以在动词不定式前面加上not表示否定。如： It’s silly of you not to forgive others for their faults.你不原谅别人的过错是很愚蠢的。 2. 是用of还是用for，可用“sb+be+adj”句型验证是否成立——成立用of，不成立用for； 3. it’s good for sb to do表示“对某人有益”，而it’s good of sb to do表示“承蒙……万分感激；某人善良”。如： It’s good for us to help others deal with growth difficulties. 帮助他人处理成长困难对我们是有好处的。 It’s good of you to let me come.承蒙邀请，万分感激。 It’s good of her to care about others.她关心别人，心地很善良。 4. 与其他句型的转换。如： It was selfish of Eddie to eat up all the food. →Eddie was so selfish that he ate up all the food. 埃迪太自私了，他把所有的食物吃完了。 It is very kind of my sister to take care of others. →My sister is kind enough to take care of others. 我姐姐照顾别人很善良。 二、It作形式主语的其他句型 句型 详解 例句 It+takes/took sb.+时间+to do sth. 固定句型，表示“花费某人多长时间做某事” It took us half an hour to finish the work. It+ be +(no good/use等)+doing sth. 做某事是没用的 It is no use crying over spilt milk. 覆水难收，后悔无益。 It’s no good worrying about a power cut. Some of the lights run on batteries. 担心停电是没用的。有些灯是靠电池运行的。 It+be+名词+to do sth.或that宾语从句 常用名词：a pleasure, a pity, a shame, an honor, a tradition, one’s duty等 It is a pleasure to work with you. 和你一起工作很愉快。 It’s a pleasure that we have the chance to work together.我们有机会一起共事，是件幸事。 It is a pity to give up halfway. 半途而废太可惜了。 It’s a pity that I can’t take part in the art show.很遗憾我不能参加这次艺术展。 It’s a shame to cover the beautiful table with a tablecloth.用桌布盖住这张漂亮的桌子真是太可惜了。 It’s a shame that I didn’t do well in the competition.真遗憾，我在比赛中表现得不好。 It is an honor to take part in the competition.能参加这场比赛是一种荣幸。 It is an honor that I can serve you. 能为你服务是我的荣幸。 In China, it is a tradition for people to eat long noodles on their birthday.在中国，对于人们来说，在生日时吃长寿面是一种传统。 It is a tradition that families get together on Spring Festival.春节家人团聚是一项传统。 It is our duty to protect the environment. 保护环境是我们的责任。 It is our duty that we(should)follow the school rules.遵守校规是我们的责任。 It+不及物动词+that宾语从句 常用动词：seem, appear, happen, matter等 It seems that it will rain soon. 似乎很快就要下雨了。 It appears that he knows the truth. 看来他知道真相。 It happened that I met him on the street.我碰巧在街上遇见了他。 It matters that we keep our promise. 我们信守承诺很重要。 注意：It happened when she was seven years old.这件事发生在她七岁的时候。 (“it”不是形式主语) It+be+过去分词+that宾语从句 常用的过去分词：said, reported, believed, known, suggested等 It is said that he is studying abroad. 据说他正在国外留学。 It is reported that the flood is under control.据报道洪水已得到控制。 It is believed that health is the greatest wealth.人们认为健康是最大的财富。 It is known that light travels faster than sound.众所周知光速比声速快。 It is suggested that we(should)start early tomorrow.有人建议我们明天早点出发。 注意：He thinks it is a pity that he missed the party.他认为错过了这次聚会很可惜。 (it是形式主语，真正的主语是“that he missed the party(主语从句)”，“a pity”是表语) =He thinks it a pity that he missed the party.他认为错过了这次聚会很可惜。 (it是形式宾语，真正的宾语是“that he missed the party(宾语从句)”，“a pity”是宾语补足语) 友情提醒： 1. It+be +a waste of time+doing sth.(高中常用)或It+be +a waste of time+to do sth.(初中常用) In my opinion, it is a waste of time persuading such a person to join us in the activity.(高中) 在我看来，说服这样的人参加我们的活动是浪费时间。 It is a waste of time playing computer games before the final exam.(高中) 期末考试前玩电脑游戏是浪费时间。 It’s a waste of time to spend too much time on the phone.(初中) 花太多时间打电话是浪费时间。 What a waste of time it is to spend too much time on computer games!(初中) 过多的在电脑游戏上花时间是多么的浪费时间啊！ 2. It+be +great fun+doing sth.或It+be +great fun+to do sth. It’s great fun playing golf.打高尔夫球很有趣。(选自《英汉多功能词典 外研社·建宏》) It’s not much fun going to a party on your own.(选自《牛津高阶英汉双解词典 第6版》) 独自一人参加聚会没什么意思。 (初高中常用第二种句型) What great fun it is to have a swim on such a hot day!(高中) 在如此炎热的天气里游泳真快乐啊！ What great fun it is to jump into a river in summer!(初中) 夏天跳进河里游泳真快乐啊！ It is great fun to go fishing. (初中) 钓鱼很有趣。 第 1 页 共 1 页 学科网（北京）股份有限公司 $ Unit 6 Sunshine for all 语法篇 (满分50分，答题时间45分钟) 一、单项选择(每题1分，满分20分) 1. ________ important ________ to learn about different cultures. A. It’s, for us B. That’s, of us C. It’s, of us D. That’s, for us 【答案】A 【解析】句意：了解不同的文化对我们来说很重要。“It is + adj. + for sb. + to do sth.”为固定句型，it作形式主语，真正的主语是后面的动词不定式，形容词important描述事物性质而非人的品格，介词用for，故选A。 2. Because of AI tools like DeepSeek, ________ is possible for us to find out many answers without using search engines. A. that B. it C. which D. this 【答案】B 【解析】句意：得益于像DeepSeek这样的人工智能工具，我们无需使用搜索引擎就能找到很多答案。It is + adj. + for sb. to do sth.为固定句型，其中it作形式主语，真正的主语是后面的不定式短语，故选B。 3. —What do you think of tomorrow’s basketball match? —I think________ difficult for us________ the match. A. we’ll be, winning B. it’ll be, winning C. we’ll be, to win D. it’ll be, to win 【答案】D 【解析】句意：“你认为明天的篮球赛会怎么样？”“我认为对我们来说，要赢得比赛是很难的。”这里I think后面是宾语从句，it’ll be+形容词+for sb to do sth，it作形式主语，不定式是真正主语，故选D。 4. —It is ________ you ________ me. —It is good ________ me to gain experience from helping you. A. nice for, helping, for B. nice of, to help, for C. nice for, to help, of D. nice of, helping, for 【答案】B 【解析】句意：“你帮助我真是太好了。”“从帮助你中获得的经验对我有好处。”It is nice of sb to do sth.某人做某事真的是太好了，描述人的性格、特质用of；be good for对……有好处。根据题干可知你帮助我很好，而帮助你给我很大受益，故选B。 5. —How dangerous it is ________ the kids ________ the kite in the street!     —Let’s stop them right now. A. for, to fly B. of, flying C. of, to fly D. for, flying 【答案】A 【解析】句意：“孩子们在街上放风筝是多么危险啊！”“让我们马上制止他们吧。”“It is+adj+for/of sb+to do sth”该句型中真正的主语是动词不定式，因此第二空应填to fly，排除B、D；介词选择取决于形容词，若形容词描述人的品质用of，若描述事情性质用for。此处dangerous描述放风筝这件事的危险性，故第一空填for。 6. —Did you feel ________was selfish of Jack to hide the comic books? —Yes. It is important ________ a boy to learn to share. A. that, of B. that, for C. it, of D. it, for 【答案】D 【解析】句意：“ 你觉得Jack把漫画书藏起来很自私吗？”“ 是的。对一个男孩来说学会分享是很重要的。” 根据“It is adj. to do sth.”可知， 第一空it符合句意；根据“important”可知，修饰的是“learn to share”这件事，因此用介词for“对……来说”，故选D。 7. —It was very honest ________ you to return the wallet you found with all the money inside. —Thanks. I just think it’s important ________ us to do the right thing. A. of, for B. for, to C. of, to D. for, of 【答案】A 【解析】句意：“你把捡到的钱包归还回去，而且里面的钱也都还了，这真是太诚实了。”“谢谢。我只是觉得对我们来说，做正确的事是很重要的。”句型“It is+形容词+of/for sb to do sth”中，如果形容词是描述人的性格、品质的，用介词“of”，如果形容词是描述事情的则用介词“for”。第一空，“honest”意思是“诚实的”，是描述人的品质的形容词，所以第一空应该用“of”；第二空，“important”意思是“重要的”，是描述事情的形容词，所以第二空应该用“for”。 8. It’s impolite ________ him ________ his seat to the old lady on the bus. A. of, to give B. for, not to give C. of, not to give D. of, don’t give 【答案】C 【解析】句意：他在公共汽车上不给那位老太太让座是很不礼貌的。It’s adj. of sb. not to do sth.句型中的形容词是描述人的品质，此处指不给那位老太太让座是很不礼貌的，动词不定式作主语，故选C。 9. ―I think it is important ________ Sandy to tell us what happened. ―Yes. It’s not clever ________ her to hide the truth. A. for, for B. of, of C. of, for D. for, of 【答案】D 【解析】句意：“我认为对桑迪来说，告诉我们发生了什么很重要。”“是的。她隐瞒真相是不明智的。”It is+adj.+for sb. to do sth.中形容词描述事物特征，It is+adj.+of sb. to do sth.中形容词描述人的品质；第一空important描述事物特征“对……来说重要”，应用for；第二空clever描述人的品质“某人做某事是聪明的”，应用of；应填for, of。 10. ________ is wrong of us ________ products made from animals in danger, and ________ is our duty ________ them. A. It, to buy, it, to protect B. It, buying, that, protecting C. That, to buy, it, to protect D. That, buying, that, protecting 【答案】A 【解析】句意：我们购买濒危动物制品是错误的，并且保护它们是我们的责任。固定句型It is+形容词+of sb+to do sth，It作形式主语，真正的主语是动词不定式，故第一空填It，第二空填to buy；后半句符合结构It is one’s duty to do sth，同样用it作形式主语，真正主语是不定式to protect。 11. We all thought ________ necessary for you to spend as much time as you could ________ English. A. that, improving B. it is, to improve C. it, improve D. it was, improving 【答案】D 【解析】句意：我们都认为你尽可能多地花时间提高英语是必要的。第一空，根据“We all thought…necessary for you to…”可知，此处表示我们都认为你尽可能多地花时间提高英语是必要的，应用it作形式宾语，结构为“主语+动词+it+for sb. to do sth.”，真正的宾语是动词不定式，此处也可理解为thought (过去式) 后是省略了that的宾语从句，宾语从句的句子结构是“It+is/was+for sb. to do sth.”，主句是一般过去时，故宾语从句中be动词应用was；第二空，“spend time (in) doing sth.”为固定搭配，表示“花费时间做某事”，故选D。 12. It is an honour ________ with such excellent people. A. work B. to work C. working D. worked 【答案】B 【解析】句意：能和如此优秀的人一起工作是一种荣幸。由“It is an honour”可知，在“It is + 名词 + to do sth.”句型中，it作形式主语，真正的主语是后面的动词不定式。本句中的“an honour”是名词，因此后面应接动词不定式 to work 作真正主语，故选B。 13. —How long did it ________ you to finish your homework yesterday? —About 2 hours. A. take B. spend C. cost D. need 【答案】A 【解析】句意：“昨天你完成作业花了多长时间？”“大约2小时。考查动词辨析。”take花费，指时间；spend花费，时间或金钱，主语是人；cost花费，指金钱；need需要。根据“How long did it ...to finish your homework…”可知，It takes sb+一段时间+to do sth表示“做某事花费某人时间”，固定搭配，故选A。 14. —Is it great fun _________around the world with your friends? —Yes. We can have fun _________the beautiful sights on the way. A. to travel, enjoying B. travelling, to enjoy C. traveling, enjoying D. to travel,to enjoy 【答案】A 【解析】句意：“和我们的朋友周游世界是不是很有趣？”“是的。我们可以沿途欣赏美景，尽情享受旅途乐趣。”It is+形容词+to do sth.，其中it是形式主语，真正的主语是动词不定式。It is great fun to do sth.做某事是很有趣的，故第一个空使用to travel；have fun doing sth.做某事很开心，故选A。 15. Many students found ________ quite difficult ________ a script based on the texts we learned. A. it, writing B. it’s, to write C. it’s, writing D. it, to write 【答案】D 【解析】句意：许多学生发现很难根据我们所学的课文写一个剧本。find it adj. to do sth觉得做某事……，it作形式宾语，真正的宾语是动词不定式，故选D。 16. It ________ a tradition for Chinese people ________ dumplings during the Spring Festival since the Han Dynasty. A. was, to eat B. has been, to eat C. was, eating D. has been, eating 【答案】B 【解析】句意：自从汉朝以来，吃饺子已经成为中国人春节的一个传统。根据时间状语“since the Han Dynasty”可知，动作从汉朝持续到现在，应用现在完成时，排除A和C。句型“It is/was/has been…for sb. to do sth.”表示“对某人来说做某事是……”，其中it作形式主语，动词不定式作真正主语，因此第二空应填to eat，故选B。 17. ________ great fun it is ________ Chinese chess with the man from America! A. How, to play B. How, playing C. What, to play D. What, playing 【答案】C 【解析】句意：和那个来自美国的人下中国象棋是多么有趣啊！本句是一个感叹句，中心词是不可数名词fun，故感叹句的结构用：What+adj.+不可数名词+主谓，排除AB；第二个空是结构：It is+n.+ to do sth.，it作形式主语，动词不定式是真正的主语，排除D。故选C。 18. This is a personal thing ________ it is no use ________ about it with others. A. because, argue B. so, arguing C. so, to argue D. because, argued 【答案】B 【解析】句意：这是私事，所以和别人争论是没有用的。because因为；so所以。分析句子可知，前后两句是因果关系，前因后果，用so连接；it is no use doing sth.“做某事没有用”，故选B。 19. It is a great honour ________ for this excellent team. A. work B. to work C. working D. worked 【答案】B 【解析】句意：能为这个优秀的团队工作是一大荣幸。It is+a/an +名词+to do sth句型中，it是形式主语，不定式是真正主语。故选B。 20. It is no good ________ too much money on computers. A. spend B. to spend C. spending D. spent 【答案】C 【解析】句意：在电脑上花费太多的钱是没好处的。It is no good doing...是固定句式。据句意，故选C。 二、用“it”作形式主语的句型改写或合并句子(每题2分，满分30分) 1. Learning the importance of teamwork is necessary for us. _________________________________________ the importance of teamwork. 【答案】It’s necessary for us to learn 【解析】句意：了解团队合作的重要性对我们来说是必要的。“Learning the importance of teamwork is necessary for us”的同义结构是“It’s necessary for us to learn the importance of teamwork”，it作形式主语，真正主语是不定式短语“to learn the importance of teamwork”。 2. Achieving a balance between schoolwork and hobbies is important. _______________________________________ between schoolwork and hobbies. 【答案】It is important to achieve a balance 【解析】句意：在学业和爱好之间取得平衡是重要的。原句中“Achieving a balance between schoolwork and hobbies”是主语，表示“在学业和爱好之间取得平衡”这一行为，系动词是“is”，表语是“important”。根据原句，需要用“It is + adj. + to do”句型进行转换，其中“It”作形式主语，真正的主语是后面的不定式短语“to achieve a balance between schoolwork and hobbies”，形容词“important”保持不变放在“is”后面。 3. To learn everything is easy if you put your heart into it. _____________________________________ everything if you put your heart into it. 【答案】It’s easy to learn 【解析】句意：如果你用心去学，一切都是很容易的。根据分析句子，结合要求可知，该句是it作形式主语的句型：It+be+adj+to do sth，easy“容易的”，形容词，作表语；learn“学习”，动词原形，与to一起构成不定式，作真正主语；又根据原句可知，时态为一般现在时，所以此处be动词要用is，it is缩写为it’s，位于句首，首字母要大写。 4. Birds catch them for food easily. ____________________________________ them for food. 【答案】It’s easy for birds to catch 【解析】句意：鸟很容易抓住它们作为食物。根据题干可知，本句适用固定句型“It + be + adj. + for/of sb. to do sth.某人做某事是……的”结构，it是形式主语，后面的不定式是真正主语；其中of 用于指某人的性格、属性、特征等，介词for表示对象，意为“对……来说”。此处表示对鸟儿来说捉食很容易，介词需用for。 5. My home is about twenty minutes by bike. ________________________________________ there from my house by bike. 【答案】It takes me twenty minutes to go 【解析】句意：从我家骑自行车大约需要20分钟。原句时态为一般现在时，改为同义句时态不变，原句也可表达为“从我家去那里骑车花了我20分钟”，使用句型It takes sb.+时间+to do sth.“做某事花费了某人多长时间”。 6. They seemed to be very tired after working. _____________________________ very tired after working. 【答案】It seemed that they were 【解析】句意：工作之后他们好像很累。根据“... seemed to do=it seemed that…似乎……”可知，形式主语用it，be tired“累的”，时态是一般过去时，从句主语“they”是复数，所以be动词用were。 7. Elderly people may not be able to take care of themselves. ________________________________________________ 【答案】It is difficult for elderly people to take care of themselves. 【解析】句意：老年人可能无法照顾自己。用“It is+形容词(+ for/of …)+不定式”结构改写，句型中it作形式主语，真正主语是后面的不定式；difficult描述事情特征，介词用for。 8. The boy was patient enough to play the piano for long hours. _____________________________________ the piano for long hours. 【答案】It was patient of the boy to play 【解析】句意：这男孩很有耐心，一连弹了好几个小时的钢琴。考查固定用法，adj enough to do sth表示“足够有……做……”，等同于It be +adj. of sb to do sth，形容人的特征，表示“某人做某事是……”。 9. The sentence is so hard that I can’t understand it. ________________________________________ the sentence. 【答案】It’s too hard for me to understand 【解析】句意：这句话太难了以至于我不能理解。根据“It’s”可知，可将原句转化成it作形式主语，动词不定式to understand the sentence作真正主语的句子，句型结构是：It’s+形容词+for sb.+to do sth.，表示“做某事对于某人来说怎么样”，so hard可转化成too hard。 10. She is coming to help us. She is really very nice. _______________________________________________ to help us. 【答案】It’s really very nice of her to come 【解析】句意：她要来帮助我们。她真的很好。可以用it作形式主语，固定句式：It is+形容词+of sb. to do sth.。 11. I haven’t seen that wonderful movie. What a pity! ___________________________ I haven’t seen that wonderful movie. 【答案】It’s a pity that 【解析】句意：我还没看过那部精彩的电影。真可惜！分析句子可知，所给句子可合并为一个it作形式主语，that引导的从句作真正的主语的句子，即“It’s a pity that...”，意为“(没有)做某事很可惜”。 12. He was foolish. He didn’t hide himself at such a dangerous moment. __________________________________ himself at such a dangerous moment. 【答案】It was foolish of him not to hide 【解析】句意：他很愚蠢。他没有在如此危险的时刻躲藏起来。题目要求将两句合并成一句。It is adj. of sb. to do sth.为固定句型，意为“某人做某事真是太……了”，其中的形容词是描述人的品质，且根据原句“was”提醒，故此处be动词应用was。 13. Everyone can try to do something for people in need. It’s an important thing. ___________________________________________________________ 【答案】It is important for everyone to try to do something for people in need. 【解析】句意：每个人都可以尝试为有需要的人做些事情。这是一件重要的事情。根据“It is+形容词 (+for/of...)+不定式”结构，原句中“important”是形容词，修饰后面的事情，故用介词“for”引出动作的执行者“everyone”；“do something”在改写时需保留原意并结合原句语境，完整的不定式短语应为“to do something for people in need”。本句为一般现在时，it作形式主语，不定式作真正主语。 14. My dad helped an elderly neighbour carry a bag of rice up the stairs. She said he was so nice. _______________________________________________________________________________ 【答案】It was nice of my dad to help an elderly neighbour carry a bag of rice up the stairs. 【解析】句意：我爸爸帮一位年长的邻居把一袋米搬上了楼。她说他人真好。根据题目要求，需要用“It is+形容词(+ for/of …) +不定式”结构改写句子，并且括号中给出了“nice”“my dad”“help”这三个关键信息。原句描述的是过去发生的事情，在改写时要把“is”变为“was”以体现一般过去时，同时用“of”连接“nice”和“my dad”，因为“nice”是描述人的品质的形容词，用“of”结构更合适，后面接不定式“to help...”来表达具体行为。 15. I feel very lucky. I have everything I need in life, but some people don’t. ______________________________________________, but some people don’t 【答案】It is lucky for me to have everything I need in life. 【解析】句意：我觉得自己非常幸运。我拥有生活中所需要的一切，但有些人却并非如此。It is+形容词+for sb.+不定式结构改写句子，形容词lucky留用，sb.用人称代词宾格me代替，动词不定式用to have everything表示。 第 1 页 共 1 页 学科网（北京）股份有限公司 $ Unit 6 Sunshine for all 语法篇 (满分50分，答题时间45分钟) 一、单项选择(每题1分，满分20分) 1. ________ important ________ to learn about different cultures. A. It’s, for us B. That’s, of us C. It’s, of us D. That’s, for us 2. Because of AI tools like DeepSeek, ________ is possible for us to find out many answers without using search engines. A. that B. it C. which D. this 3. —What do you think of tomorrow’s basketball match? —I think________ difficult for us________ the match. A. we’ll be, winning B. it’ll be, winning C. we’ll be, to win D. it’ll be, to win 4. —It is ________ you ________ me. —It is good ________ me to gain experience from helping you. A. nice for, helping, for B. nice of, to help, for C. nice for, to help, of D. nice of, helping, for 5. —How dangerous it is ________ the kids ________ the kite in the street!     —Let’s stop them right now. A. for, to fly B. of, flying C. of, to fly D. for, flying 6. —Did you feel ________was selfish of Jack to hide the comic books? —Yes. It is important ________ a boy to learn to share. A. that, of B. that, for C. it, of D. it, for 7. —It was very honest ________ you to return the wallet you found with all the money inside. —Thanks. I just think it’s important ________ us to do the right thing. A. of, for B. for, to C. of, to D. for, of 8. It’s impolite ________ him ________ his seat to the old lady on the bus. A. of, to give B. for, not to give C. of, not to give D. of, don’t give 9. ―I think it is important ________ Sandy to tell us what happened. ―Yes. It’s not clever ________ her to hide the truth. A. for, for B. of, of C. of, for D. for, of 10. ________ is wrong of us ________ products made from animals in danger, and ________ is our duty ________ them. A. It, to buy, it, to protect B. It, buying, that, protecting C. That, to buy, it, to protect D. That, buying, that, protecting 11. We all thought ________ necessary for you to spend as much time as you could ________ English. A. that, improving B. it is, to improve C. it, improve D. it was, improving 12. It is an honour ________ with such excellent people. A. work B. to work C. working D. worked 13. —How long did it ________ you to finish your homework yesterday? —About 2 hours. A. take B. spend C. cost D. need 14. —Is it great fun _________around the world with your friends? —Yes. We can have fun _________the beautiful sights on the way. A. to travel, enjoying B. travelling, to enjoy C. traveling, enjoying D. to travel,to enjoy 15. Many students found ________ quite difficult ________ a script based on the texts we learned. A. it, writing B. it’s, to write C. it’s, writing D. it, to write 16. It ________ a tradition for Chinese people ________ dumplings during the Spring Festival since the Han Dynasty. A. was, to eat B. has been, to eat C. was, eating D. has been, eating 17. ________ great fun it is ________ Chinese chess with the man from America! A. How, to play B. How, playing C. What, to play D. What, playing 18. This is a personal thing ________ it is no use ________ about it with others. A. because, argue B. so, arguing C. so, to argue D. because, argued 19. It is a great honour ________ for this excellent team. A. work B. to work C. working D. worked 20. It is no good ________ too much money on computers. A. spend B. to spend C. spending D. spent 二、用“it”作形式主语的句型改写或合并句子(每题2分，满分30分) 1. Learning the importance of teamwork is necessary for us. _________________________________________ the importance of teamwork. 2. Achieving a balance between schoolwork and hobbies is important. _______________________________________ between schoolwork and hobbies. 3. To learn everything is easy if you put your heart into it. _____________________________________ everything if you put your heart into it. 4. Birds catch them for food easily. ____________________________________ them for food. 5. My home is about twenty minutes by bike. ________________________________________ there from my house by bike. 6. They seemed to be very tired after working. _____________________________ very tired after working. 7. Elderly people may not be able to take care of themselves. ________________________________________________ 8. The boy was patient enough to play the piano for long hours. _____________________________________ the piano for long hours. 9. The sentence is so hard that I can’t understand it. ________________________________________ the sentence. 10. She is coming to help us. She is really very nice. _______________________________________________ to help us. 11. I haven’t seen that wonderful movie. What a pity! ___________________________ I haven’t seen that wonderful movie. 12. He was foolish. He didn’t hide himself at such a dangerous moment. __________________________________ himself at such a dangerous moment. 13. Everyone can try to do something for people in need. It’s an important thing. ___________________________________________________________ 14. My dad helped an elderly neighbour carry a bag of rice up the stairs. She said he was so nice. _______________________________________________________________________________ 15. I feel very lucky. I have everything I need in life, but some people don’t. ______________________________________________, but some people don’t 第 1 页 共 1 页 学科网（北京）股份有限公司 $