It isn't polite to do sth-2025-2026学年七年级英语下册句型全解（外研版）

初一下册外研版 【寒假专版】A版句型全解 寒假专版 【A版句型全解】It isn't polite to do sth. 初中·外研版·初一下册 基本结构 句型结构：It isn't polite to do sth It为形式主语，真正主语是后置的不定式短语to do sth. 例句展示： It isn't polite to talk loudly in the library.(在图书馆大声说话是不礼貌的) It isn't polite to cut in line when waiting for the bus.(等公交车时插队是不礼貌的) 句型精讲（核心考法） 考法1：区分for与of的用法（中考高频考点） 判断规侧+例句对比 规则l:形容词描述to do sth.这件事的性质或特点（如difficult,.easy,important,necessary, possible等)→用for 例句：It is necessary for students to finish homework on time.. 验证：Students are necessary逻辑不通 规则2：形容词描述sb.的品质或性格（如kind,nice,clever,foolish,polite,brave等）→用 of 例句：It is polite of her to give seats to the old. 验证：She is polite逻辑通顺 真题再现(2024外研版教材配套中考模拟题) It is dangerouschildren to play with fire. A.of 1 初一下册外研版 【寒假专版】A版句型全解 B.for C.with D.at 答案：B 解析：dangerous描述”玩火”这件事的性质，不修饰人，用for (2023山东潍坊中考) It's very nice_you to invite us to the party. A.of B.for C.to D.with 答案：A 解析：nice描述人的品质，”you are nice”逻辑通顺，用of 考法2：句型的同义句转换 转换规则+例句转换 规则：去掉形式主语It,保留形容词，将for/of sb.中的sb.作为句子主语，结构变形为To do sth.is+adj.+for/ofsb.(不定式短语作主语时，谓语动词用单数) 例句l:原句It is easy for him to solve the problem. 同义句：To solve the problem is easy for him. 例句2：原句It is silly of Tom to believe the stranger. 同义句：To believe the stranger is silly of Tom, 真题再现(2024外研版教材同步练习) It is important for us to protect the environment.(改为同义句) the environment is important for us. 答案：To protect (2023四川成都中考改编) 2 初一下册外研版 【寒假专版】A版句型全解 It is kind of you to help the homeless dog.(改为同义句) the homeless dog is kind of you. 答案：To help 考法3：对句型中不同成分提问 提问规则+例句提问 规则1：对形容词提问→用How+be+it+for/ofsb.+to do sth.? 例句：原句It is difficult for her to pass the exam. 间句：How is it for her to pass the exam? 规则2：对sb.提问→用Who+be+it+adj.+for/of+to do sth.? 例句：原句It is kind of Lucy to help the poor boy. 问句：Who is it kind of to help the poor boy? 规则3：对不定式短语提问→用What+be+it+adj.+for/ofsb.+todo? 例句：原句It is meaningful for us to join the volunteer activity.. 问间句：What is it meaningful for us to do? 真题再现(2023天津中考改编) It is very interesting for us to play chess.(对划线部分提问) it for you to play chess? 答案：How is (2024外研版教材单元测试) It is foolish of him to waste time on games.（对划线部分提问) _is it foolish of waste time on games? 答案：Who;to 句型综合训练 3 初一下册外研版 【寒假专版】 A版句型全解 训练1：单项选择（考察for/of辨析） 1.It is polite you to hold the door for others. A.of B.for C.to D.with 2.It is easy_children to learn new languages. A.of B.for C.at D.in 3.It's careless him to leave his phone on the bus. A.of B.for C.from D.about 4.It is important_students to preview lessons before class. A.of B.for C.on D.with 5.It is kind Mary to share her toys with her classmates. A.of B.for C.to D.by 6.It is dangerouspeople to climb mountains in bad weather. A.of B.for C.with D.at 7.It is cleverTom to solve the puzzle in five minutes. A.of B.for C.in 初一下册外研版 【寒假专版】A版句型全解 D.about 训练2：同义句转换（考察句型变形） 1.It is necessary for us to drink enough water every day. enough water every day is necessary for us. 2.It is silly of him to spend all his money on games. -all his money on games is silly of him. 3.It is important for children to learn to be independent. -to be independent is important for children. 4.It is brave of the soldier to fight against the enemy. -against the enemy is brave of the soldier. 5.It is difficult for me to finish the work in an hour. the work in an hour is difficult for me. 6.It is polite of you to say"thank you"when receiving help. -"thank you"when receiving help is polite of you 训练3：完成句子（考察语境运用） 1.对我们来说，每天锻炼一小时很有益。 >It is beneficialexercise for an hour every day. 2.他能在这么短的时间内完成任务，真是太聪明了。 →It is clever finish the task in such a short time. 3.对学生来说，认真听讲是很重要的。 -It is importantlisten carefully in class. 4.她把座位让给老人，真是太有礼貌了。 →It is polite offer her seat to the old man 5.对我们来说，保护环境是我们的责任。 -It is our duty_protect the environment. 6.你帮助迷路的小孩找到妈妈，真是太好了。 -It is kind help the lost child find his mother. 7.对孩子们来说，保持好奇心很有必要。 5 初一下册外研版 【寒假专版】A版句型全解 →It is necessary keep curiosity. 8.他冒着大雨去救那个受伤的人，真是太勇敢了。 →It is brave save the injured person in the heavy rain. 训练4：写作高级句式 1.每天阅读英语报纸对我们提高英语水平很有帮助。 -It is helpfulread English newspapers every day to improve our English. 2.你能抽出时间参加我们的活动，真是太友好了。 -It is friendlyspare time to join our activity. 3.对我们来说，学会与他人合作是很重要的。 with others is important for us. 4.她放弃了出国的机会来照顾生病的母亲，真是太孝顺了。 →It is filial give up the chance to study abroad to take care of her sick mother. 5.对学生来说，养成良好的学习习惯是必要的。 good study habits is necessary for students 参考答案 I训练1：单项选择 1.A2.B3.A4.B5.A6.B7.A Ⅱ.训练2：同义句转换 1.To drink 2.To spend 3.To learn 4.To fight 5.To finish 6.To say ⅡL.训练3：完成句子 1.for us to 2.of him to 3.for students to 4.of her to 5.for us to 6.of you to 7.for children to 8.of him to V.训练4：写作高级句式 1.for us to 2.of you to 3.To cooperate 4.of her to 5.To develop 6