Unit2语法(It作形式主语的三大句型)讲解与练习-2026-2027学年人教版英语九年级上册

**基本信息** 聚焦It作形式主语三大句型，结合孔子、袁隆平、屠呦呦等中外励志人物素材，通过讲解+多题型练习实现语法巩固与人文渗透。 **题型特征** |题型|题量|知识覆盖|命题特色| |----|----|----------|----------| |单项选择|15题|三大句型基础辨析|以张桂梅办学等真实事例考查of/for区分及时态| |of/for填空|10题|介词使用规则|用"每周制定计划""照顾流浪动物"等情境强化判断| |句型转换|10题|主动与形式主语句转换|要求将"保护传统文化很重要"等句子改写为标准句型| |单句改错|10题|常见语法错误|针对"friendly for"等介词混淆及虚拟语气缺失设题| |中英互译|10题|语法综合应用|包含"屠呦呦日夜实验"等励志主题翻译，融合语言能力与文化意识|

Unit2 Inspiring People语法讲解与练习 It作形式主语的三大句型 *It is/was...of sb. to do... *It is/was...for sb. to do... *It is/was...that.... 一、三大形式主语句型讲解 句型 1：It is/was + adj. + of sb. to do sth. 形容词描述人的性格、品质，形容词修饰人 常用形容词:brave, wise, kind, generous, modest, creative, polite, silly, impolite 判断技巧:可改写为Sb. + be + adj. + to do sth.（逻辑通顺） 时态区分 It is：评价当下、普遍人物品质 It was：评价历史人物、过去发生的事 教材例句 It was wise of Confucius to respect elders. = Confucius was wise to respect elders.孔子敬重长辈，十分明智。 It is brave of Zhang Qian to finish his hard task.张骞完成艰巨任务，十分勇敢。 句型 2：It is/was + adj. + for sb. to do sth. 形容词描述事情本身的难易、价值、客观属性，不修饰人 常用形容词:important, necessary, difficult, hard, amazing, helpful, possible, wonderful 判断技巧:不能改成 Sb. be adj. to do（逻辑不通） 教材例句 It was very difficult for Zhong Yang to collect seeds in Tibet. 对钟杨而言，在西藏采集种子十分艰难。 It is important for us to learn from inspiring people.向榜样学习对我们来说十分重要。 of /for 快速区分口诀 形容人品用of,形容事情用 for；能换 sb be adj用of，不能替换就用 for 句型 3：It is/was +形容词 + that从句 第一部分 基本用法 本质 *it是形式主语,that 引导完整陈述句作真正主语,用来评价一整件完整发生的事情。 结构 *现在评价、客观事实：It is + adj. + that + 完整句子 *过去人物、过往事迹：It was + adj. + that + 完整句子 单元高频形容词 inspiring, amazing, surprising, wonderful, clear, true 教材原句 It was amazing that Faraday became a great scientist without much education. 法拉第没受过多少教育却成了伟大科学家，这件事令人惊叹。 It was inspiring that her lifelong dream finally came true. 她毕生的梦想最终实现，十分鼓舞人心。 第二部分 两大语气规则（九年级考点） 1.陈述语气（本单元主流）形容词：amazing, inspiring, surprising, clear, true从句时态根据事情时间正常变化，不用变形 例：It is surprising that he gave up his research. 2.虚拟语气（拓展考点）形容词：important, necessary, vital, strange 从句固定：(should) +动词原形，should 可省略 It is necessary that we (should) learn from great people. 第三部分 易错区分：形式主语 vs 强调句 本句型（形式主语）：去掉 It is/was…that,句子残缺不通 It is inspiring that she succeeded. → She inspiring succeeded.（不通） It is…that 强调句：去掉框架,句子完整通顺 It was last year that she succeeded. → She succeeded last year.（完整） 二、三大 it 句型对比表格 句型 核心区别 改写判断 It is adj. of sb to do 形容词形容人品质 Sb is adj. to do（通顺） It is adj. for sb to do 形容词形容事情难度 Sb is adj. to do（不通） It is adj. that 从句 评价整件完整事件 真正主语是一整句话 【巩固练习】 一、单项选择 1.It’s kind ______ you to help the old man carry heavy bags. A. for B. of C. that D. to 2.It’s difficult ______ us to understand the scientist’s report. A. of B. for C. with D. at 3.______ surprising that Yuan Longping spent all his life on rice. A. That is B. It is C. This is D. He is 4.It was brave ______ Zhang Guimei to build schools for poor girls. A. for B. to C. of D. with 5.It is necessary ______ students to learn from inspiring people. A. of B. for C. that D. on 6.It ______ amazing that Tu Youyou won the Nobel Prize in Medicine. A. is B. that C. was D. were 7.It’s silly ______ him to give up his dream easily. A. for B. of C. to D. at 8.It is clear ______ hard work leads to success. A. of B. for C. that D. what 9.It was impossible ______ people to fly hundreds of years ago. A. of B. for C. with D. on 10.It’s polite ______ her to greet everyone she meets. A. for B. of C. that D. to 11.______ wonderful that Faraday became a great scientist with little schooling. A. It was B. That was C. It were D. This was 12.It’s important ______ everyone to keep learning all the time. A. of B. for C. with D. at 13.It was strange ______ he refused such a good chance. A. for B. of C. that D. to 14.It’s generous ______ him to donate much money to poor areas. A. for B. of C. on D. in 15.It is helpful ______ us to read stories of great people. A. of B. for C. that D. with 二、用 of /for 填空 1.It’s wise ______ you to make a study plan every week. 2.It’s boring ______ me to do the same work every day. 3.It was careless ______ him to lose his important notebook. 4.It’s easy ______ kids to learn simple English songs. 5.It’s warm-hearted ______ her to take care of homeless animals. 6.It was hard ______ the scientists to work in cold mountains. 7.It’s rude ______ people to talk loudly in the library. 8.It’s useful ______ us to keep diaries in English. 9.It’s patient ______ teachers to explain problems again and again. 10.It’s dangerous ______ children to swim in the river alone. 三、句型转换 要求：将原句改写为 it 作形式主语的标准句型 1.To protect traditional culture is important. _________________________________________ 2.She was generous to share her knowledge with others. _________________________________________ 3.That he spent decades on medical research is amazing. _________________________________________ 4.To climb the high mountain alone was hard for the young man. _________________________________________ 5.You are wise to hold on to your dream. _________________________________________ 6.That she overcame so many difficulties inspired everyone. _________________________________________ 7.To learn from great people is necessary for students. _________________________________________ 8.He was careless to lose his research report. _________________________________________ 9.That scientists keep exploring new things is clear. _________________________________________ 10.To finish the long speech in ten minutes was impossible for me. _________________________________________ 四、单句改错 1.It is friendly for her to take care of stray cats. _________________________________________ 2.That is surprising that many scientists live a simple life. _________________________________________ 3.It was necessary of us to keep practicing every day. _________________________________________ 4.It strange that he refused such a valuable chance. _________________________________________ 5.It’s impolite of people cut in line in public. _________________________________________ 6.It was clear of he would make great progress soon. _________________________________________ 7.It is vital that we (should) keep reading biographies regularly. _________________________________________ 8.It difficult for children to understand the scientist’s words. _________________________________________ 9.It’s modest for Yuan Longping to never praise himself. _________________________________________ 10.It was amazing that he give up his rich life for research. _________________________________________ 五、中英互译 1.他自愿支援乡村教育，真是无私。 _________________________________________ 2.对青少年来说坚持阅读是十分有益的。 _________________________________________ 3.她一生致力于科研，这件事令人深受鼓舞。 _________________________________________ 4.不付出努力就实现理想对任何人来说都不可能。 _________________________________________ 5.我们有必要向身边平凡的榜样学习。 _________________________________________ 6.It was brave of Tu Youyou to carry out countless experiments day and night. _________________________________________ 7.It is helpful for us to watch documentaries about inspiring people. _________________________________________ 8.It is obvious that all great achievements come from long-term efforts. _________________________________________ 9.It was stupid of him to give up his research halfway. _________________________________________ 10.It is wonderful that more young people decide to devote themselves to science. _________________________________________ Keys 一、单项选择 1.B 2.B 3.B 4.C 5.B 6.A 7.B 8.C 9.B 10.B 11.A 12.B 13.C 14.B 15.B 二、of /for 填空 1.of 2.for 3.of 4.for 5.of 6.for 7.of 8.for 9.of 10.for 三、句型转换 1.It is important to protect traditional culture. 2.It was generous of her to share her knowledge with others. 3.It was amazing that he spent decades on medical research. 4.It was hard for the young man to climb the high mountain alone. 5.It is wise of you to hold on to your dream. 6.It was inspiring that she overcame so many difficulties. 7.It is necessary for students to learn from great people. 8.It was careless of him to lose his research report. 9.It is clear that scientists keep exploring new things. 10.It was impossible for me to finish the long speech in ten minutes. 四、单句改错 1.for → of 2.That → It 3.of → for 4.It 后加 is 5.cut → to cut 6.of → that 7.keeps → (should) keep 8.It 后加 is 9.for → of 10.give → gave 五、中英互译 1.It is selfless of him to volunteer to support rural education. 2.It is very helpful for teenagers to keep reading. 3.It was inspiring that she devoted her whole life to scientific research. 4.It is impossible for anyone to realize dreams without hard work. 5.It is necessary for us to learn from ordinary role models around us. 6.屠呦呦日夜进行无数实验，十分勇敢。 7.观看励志人物纪录片对我们很有帮助。 8.显而易见，所有伟大成就都源自长期的付出。 9.他中途放弃研究，实在糊涂。 10.越来越多年轻人决心投身科学，这真是一件美好的事。 2 / 2 学科网（北京）股份有限公司 $