Unit 2 单元语法：it的特殊用法（精讲课件）2026-2027学年九年级英语上册单元核心知识精讲精练（新教材人教版）

该初中英语课件聚焦九年级Unit 2 Inspiring People语法专项，系统梳理"It is/was + adj. (+for/of sb.) + to do sth."和"It is/was … that 从句"两大核心句型，通过结构公式解析、课本例句对比、高频形容词分类及易错点归纳，构建完整知识网络，清晰呈现语法点内在逻辑与应用场景。 其亮点在于融合口诀记忆（"修饰事用for，修饰人用of"）和对比辨析（形式主语与强调句区分）培养思维品质，设计分层练习（课后基础改写、拓展单选填空）提升语言能力与学习能力，助力学生精准掌握语法应用，也为教师提供结构化复习方案，增强教学针对性。

新人教版/英语/九年级 语 法 专 项 Unit 2 Inspiring People 人教版新教材 语法点 Unit 1 The Changing World 一般过去时与现在完成时的区别 used to 的用法 Unit 2 Inspiring People It is/was + adj. (+ for/of sb) + to do sth. It is/was … that 从句 Unit 3 Smart Learning that 和 if/whether 引导的宾语从句 Unit 4 Our Memory 特殊疑问词引导的宾语从句 Unit 5 Power of Ideas 一般现在时和一般过去时的被动语态 Unit 6 Beyond Earth 一般将来时的被动语态 Unit 7 Feel the Rhythm 关系从句 Unit 8 More Than a Game 主谓一致 2 CONTENT 目录 It is/was + adj. (+ for /of sb) + to do sth. 1 2 3 It is/was … that 从句 4 课后练习 拓展练习 01 It is/was + adj. (+for/of sb.) + to do sth. It is/was + adj. (+for/of sb.) + to do sth. 句型公式 It is/was + adj. (+for/of sb.) + to do sth. ①It：形式主语（假主语），无实际词义，只是放在句首占位，避免句子头重脚轻（英语不喜欢把很长的 to do 短语放句首）。 ②to do sth.：真正主语，句子真正描述的对象是 “做某事” 这件行为。 ③is / was: is-用于现在、客观常态; was-用于过去（本单元写伟人过去事迹，大量用 was）。 ④ sb. 必须用宾格：me /you/him /her/us /them，不能用主格 I, he,she。 ⑤ (for/of sb.) 可以省略，省略后：It is/was + adj. + to do sth. 5 It is/was + adj. (+for/of sb.) + to do sth. ① It was great of Yuan Longping to develop a new kind of rice. 袁隆平培育出一种新型水稻，真是了不起。 ② It is always important for us to keep going in life. 对我们来说，人生中坚持下去总是很重要的。 课 本 例 句 解 析 形式主语，无实义，占位放句首 be 动词用过去式，讲述袁隆平过去的事迹 形容词，评价人的品质，故用介词of 介词 of 后的宾语 真正主语，指 “培育新型水稻” 这件事 形式主语，无实义，避免句子头重脚轻 be 动词用一般现在时，描述客观道理 形容词描述 “坚持” 这件事，故用介词for for 后面用人称宾格，不能用 we 真正主语，指 “人生中坚持下去” 这件行为 6 It is/was + adj. (+for/of sb.) + to do sth. 句型 A：It is/was + adj. + for sb. + to do sth. 形容词描述事情、行为本身（难度、必要性、危险性，不描述人的性格品质）。 翻译：对某人来说，做某事是…… 的 判断小技巧：不能改成 Sb. be + adj.，逻辑不通。 核 心 难 点 for sb. vs of sb. 口诀：修饰事用 for；修饰人用 of 7 It is/was + adj. (+for/of sb.) + to do sth. 高频形容词（for） important (重要的)、necessary (必要的)、 difficult/hard (困难的)、easy (容易的)、 possible (可能的)、impossible (不可能的)、 dangerous (危险的)、useful (有用的)、meaningful (有意义的)。 核 心 难 点 It is important for us to learn from inspiring people. 对我们来说，向励志人物学习很重要。 （important 修饰 “学习榜样” 这件事，≠我们本人很重要） It was hard for Tu Youyou to do research at that time. 在那个年代，对屠呦呦来说做研究十分艰难。 8 It is/was + adj. (+for/of sb.) + to do sth. 句型 B：It is/was + adj. + of sb. + to do sth. 形容词描述人的性格、品质、德行，用来评价人本身，通过行为看出人的品性。 翻译：某人做某事，真是…… 的 判断小技巧：可以改写为 Sb. + be + adj.，句子通顺，就用 of。 核 心 难 点 for sb. vs of sb. 口诀：修饰事用 for；修饰人用 of 9 It is/was + adj. (+for/of sb.) + to do sth. 高频形容词（of） brave (勇敢的)、wise (明智的)、kind (善良的)、polite (有礼貌的)、rude (粗鲁的)、clever (聪明的)、honest (诚实的)、careless (粗心的)、silly (愚蠢的)、 great (了不起的)。 核 心 难 点 It was wise of Qian Xuesen to return to China. 钱学森回到祖国，真是明智。→ Qian Xuesen was wise ✔ It’s rude of you to laugh at others. 你嘲笑别人，很无礼。→ You are rude ✔ 10 It is/was + adj. (+for/of sb.) + to do sth. 句型转换 1. 把真正主语 to do 提前（书面看懂即可，日常少用） ✍ It is important for us to keep trying. = To keep trying is important for us. 坚持努力对我们很重要。 TIP:　英语习惯优先用 it 放句首，to do 后置。 2. of 句型同义改写 ✍ It was brave of her to save people. = She was brave to save people. 她救人很勇敢。 TIP: for 句型不能这样改写 It is difficult for me to finish it. ≠ I am difficult to finish it.（我这个人很难，语义错误） 11 It is/was + adj. (+for/of sb.) + to do sth. of 句型改写 ✍ It was wise of Qian Xuesen to return to China.（改为同义句） 钱学森回到祖国，是很明智的。 Qian Xuesen was wise to return to China. for 句型改写 ✍ It is meaningful for us to learn from inspiring people.（改为同义句） 向励志人物学习对我们很有意义。 To learn from inspiring people is meaningful for us. 形容词wise描述人的品质，of 句型可以改写为 “人 + be + 形容词 + to do”。 It是形式主语，to do sth. 才是真正主语，可以把 to‑do 短语放到句首作主语。 12 It is/was + adj. (+for/of sb.) + to do sth. 易错提醒 ①sb. 必须宾格 ✓ It’s kind of her to give others a hand. × It’s kind of she to give others a hand. ✓ It’s polite of him to greet teachers. × It’s polite of he to greet teachers. ②to 后面接动词原形，不能 doing/doing ✓ It was brave for the players to face the big challenge. × It was brave for the players facing the big challenge. ✓ It is useful for teenagers to read more good books. × It is useful for teenagers reading more good books. 13 It is/was + adj. (+for/of sb.) + to do sth. 易错提醒 ③不要混淆 for/of × It was important of us to learn history. ✓ It was important for us to learn history.（important 是形容 “学历史” 这件事，不是我们人本身重要） × It was brave for him to fight. ✓ It was brave of him to fight.（brave 形容人勇敢） ④时态：讲历史人物往事，be 动词用was，不要用 is ✓ It was great of Yuan Longping to develop hybrid rice. × It is great of Yuan Longping to develop hybrid rice. 14 02 It is/was …that 从句 It is/was …that 从句 单元重点语法，和It is/was +adj.+(for/of sb.)+to do sth.是同一系列it作形式主语句型，本单元大量评价伟人故事，是中考单选、句型转换、书面表达高频考点。 注意区分：本句型 ≠ 强调句。 It is/was + adj. + that 从句：it 是形式主语，that 从句是真正主语，翻译：“…… 这件事是…… 的”。不要和强调句型It is/was +被强调部分+that…混淆。 ① It is + adj. + that 从句 It is important that we learn from great people. 我们向伟人学习这件事是很重要的。 it 是形式主语，真正主语是 that 引导的从句that we learn from great people。 16 It is/was …that 从句 单元重点语法，和It is/was +adj.+(for/of sb.)+to do sth.是同一系列it作形式主语句型，本单元大量评价伟人故事，是中考单选、句型转换、书面表达高频考点。 注意区分：本句型 ≠ 强调句。 It is/was + adj. + that 从句：it 是形式主语，that 从句是真正主语，翻译：“…… 这件事是…… 的”。不要和强调句型It is/was +被强调部分+that…混淆。 ② It is/was … + that… It is great people that we should learn from.　 正是伟人，才是我们应该学习的对象。 强调句型：去掉It is…that，句子依然完整：We should learn from great people.，这是判断强调句的核心方法。 17 It is/was …that 从句 形式主语（It is +adj.+that） It is true that he achieved great success. 他取得巨大成功这件事是真的。 　　it 代指后面 that 整件事情 强调句（It is …that） It is he that achieved great success. 正是他取得了巨大的成功。 　　去掉 It is…that：He achieved great success.句子完整通顺。 形式主语：that 前面一定是形容词，that 从句是真正主语，去掉 It is…that，句子残缺。 强调句：that 前面可以是人 / 物 / 时间，去掉It is/was…that，剩余部分可以还原成完整句子。 快速区分口诀 18 It is/was …that 从句 句型公式 It is/was …that 从句 ①It：形式主语，无实际词义，只是句首占位，避免把很长 that 从句放在句首造成头重脚轻。 ②that 从句：真正主语，整个 that 引导的完整句子才是描述的主体，代表 “…… 这件事情”。 ③is /was 时态规则 　　It is + adj.+that…：描述现在客观事实、评价，用一般现在时。 　　It was + adj.+that…：描述过去发生的人物事迹（本单元写励志伟人，大量使用 was）。 ④that 后面必须接完整陈述句：要有主语 + 谓语，不能接动词原形。that 在从句中不作成分，　 　一般不省略。 ⑤同义改写：把 that 从句直接放到句首作主语（书面可看懂，日常极少用） 　It is amazing that … = That … is amazing. 19 It is/was …that 从句 ① It is amazing that Faraday became a great scientist without much education.法拉第没有受过多少教育，却成为一名伟大的科学家，这令人惊叹。 ② It was admirable that Zhong Yang spent his whole life protecting plant seeds.钟扬用尽一生保护植物种子，这件事令人敬佩。 课 本 例 句 解 析 It is + adj. + that 从句，it 为形式主语；真正主语为 that 引导的完整从句that Faraday became a great scientist without much education，指代 “法拉第没受多少教育却成为伟大科学家” 这件事。 It was + adj. + that 从句，it 为形式主语；真正主语为 that 引导完整从句that Zhong Yang spent his whole life protecting plant seeds，指代 “钟扬穷尽一生保护植物种子” 这件事。 20 It is/was …that 从句 常用形容词（用来评价整件事） amazing（令人惊叹的）、surprising（令人惊讶的）、inspiring（鼓舞人心的）、admirable（令人敬佩的）、wonderful（极好的）、important（重要的）、strange（奇怪的）、true（真实的）。 对比记忆： It is +adj.+for sb. to do sth.：真正主语是to do 动词不定式（一件动作） It is necessary for us to respect great people.　对我们来说，尊重伟人是很有必要的。 It is +adj.+that从句：真正主语是that 引导完整句子（一整件事情） It is necessary that we respect great people. 我们应当尊重伟人，这件事很有必要。 21 It is/was …that 从句 常用形容词（用来评价整件事） amazing（令人惊叹的）、surprising（令人惊讶的）、inspiring（鼓舞人心的）、admirable（令人敬佩的）、wonderful（极好的）、important（重要的）、strange（奇怪的）、true（真实的）。 It is inspiring that many young people learn from those great people. 许多年轻人向伟人学习，这件事很鼓舞人心。 It was surprising that Tu Youyou won the Nobel Prize in her old age. 屠呦呦晚年获得诺贝尔奖，这件事令人惊叹。 真正主语：that many young people learn from those great people（整件事） was 对应过去发生的事迹，that 后是完整句。 22 It is/was …that 从句 句型转换 转换 1：that 从句挪到句首（同义句） 原句：It is admirable that Zhong Yang collected millions of plant seeds. 　　　= That Zhong Yang collected millions of plant seeds is admirable. tip：英语习惯用 it 放句首，that 从句后置，第二种写法只用于阅读理解看懂，写作优先用 it 作形式主语版本。 转换 2：和 to do 句型同义改写（部分形容词可以互换） It is important that we keep trying. = It is important for us to keep trying. tip：不是所有形容词都可以互换，只有描述客观事件的形容词（important/necessary 等）才可以互换；amazing、surprising 这类描述感受的形容词，一般不改成 to do 句型。 23 It is/was …that 从句 易错提醒 ①that 后面必须是完整陈述句，要有主语和谓语动词 ✓ It was surprising that she achieved so much. × It was surprising that achieve so much.（从句缺少主语） ②区分 was/is 时态，描述伟人过去事迹，be 动词用was ✓ It was amazing that Yuan Longping succeeded in hybrid‑rice research. × It is amazing that Yuan Longping succeeded in hybrid‑rice research.（讲述过去的成就，不用 is） ③that 从句内部人称代词要用主格，不能用宾格 ✓ It is wonderful that she helps others. × It is wonderful that her helps others.（her 是宾格，不能做从句主语） 24 It is/was …that 从句 得分速记 1. It is/was +adj.+that从句：it 为形式主语，that 从句才是真正主语，描述整件事情。 2. that 后面接完整主谓陈述句，不能直接接动词原形。 3. 讲伟人往事 be 动词用 was；that 从句内部代词用主格。 4. 和 to do 句型区分：to do 对应动作；that 从句对应完整事件。 It was wonderful that Yuan Longping helped solve the food problem. 袁隆平助力解决粮食问题，这件事非常了不起。 形式主语，that 从句是真正主语 后接完整主谓句子, that 从句侧重完整事件 用于叙述过去人物事迹 25 03 课后练习 课后练习 ①It was great of Yuan Longping to develop a new kind of rice and help reduce hunger. 袁隆平培育出新型水稻，帮助缓解饥饿，真是了不起。 ②It was amazing that Marie Curie did research in physics and chemistry even though she lived a hard life.居里夫人尽管生活艰苦，仍然从事物理和化学研究，这件事令人惊叹。 ③It was difficult for Tu Youyou to do that kind of work back in those days. 在那个年代，屠呦呦做那类工作十分艰难。 ④It’s really very nice of my teacher to support and encourage us. 我的老师支持并鼓励我们，人真的很好。 句型总结： ①It was great of sb. to do / It’s nice of sb. to do → of，形容词评价人的品质，to + 动词原形 ②It was difficult for sb. to do → for，形容词评价事情，to + 动词原形 ③It was amazing that +完整句子 → that 后要有主谓，不能直接加动词原形 ④was用于过去人物事迹；It’s=It is用于现在评价 课后练习 It is necessary for us to listen to our teacher’s advice. It is amazing that tall trees can grow from tiny seeds. It was wise of Confucius to say that we should treat our elders with respect. It is inspiring that Professor Gui’s childhood dream of becoming a space scientist came true through his efforts and hard work. It was brave of Victor Hugo to stand up for the common people he cared about. 课后练习 Ｃ Ｄ Ｂ Ａ 中文翻译 阅读伟人的故事并向他们学习总是鼓舞人心。最近，我读到了著名丝绸之路的开拓者张骞。为帮助击败敌人，汉武帝派遣张骞去寻找月氏人。不幸的是，张骞被敌人俘获。 对他而言，完成任务或是回家似乎都不可能。然而大约十年后，他找到机会逃走，最终成功找到了月氏人。他始终没有忘记自己的使命，这次出行还带回西域宝贵情报，这实在勇敢而令人敬佩。后来，他再度被派往这些地区建立交往。这类故事给予我们力量与启迪。铭记过去，想方设法为更美好的未来多做些事，对我们而言十分重要。 04 拓展练习 拓展练习 单项选择 1．________ easy to learn new words if you practice often. A．It is 　　　　B．That is C．This is 2．It’s generous ________ my father ________ help poor children. A．of; to 　　　　B．for; to C．to; of 3．It’s brave ________ the young man ________ save the child. A．for; to B．of; to 　　　　C．to; for 4．It’s careless ________ you ________ make such silly mistakes. A．of; to 　　　　B．for; to C．to; for 5．It’s honest ________ her ________ tell the truth. A．for; to B．of; to 　　　　C．for; / 6．—It’s very kind ________ you to help me.　　—It’s easy ________ me to do so. A．of; for B．for; of 　C．of; of 拓展练习 7．It’s kind ________ you ________ help me with my lessons. A．for; to B．of; to C．of; / 8．It is necessary ________ students to take exercise regularly. A．of 　　B．for C．to 9．It’s dangerous ________ kids ________ swim in the river alone. A．of; to 　　　　B．for; to C．to; for 10．It’s natural ________ teenagers ________ have worries. A．of; to 　　　　B．for; to C．to; for 11．It is our duty ________ our parents well. A．look after 　B．to look after 　　C．looking after D．looked after 12．It’s rude ________ him to talk loudly in the library. A．for 　　　B．of 　　　C．with 拓展练习 13．She makes ________ a rule to write diaries every evening. A．that 　　　B．it C．this 14．It’s clever ________ him ________ work out the difficult problem. A．for; to B．of; to 　　　　　C．to; of 15．It was not easy ________ Marie Curie to do scientific research. A．for 　　　B．of 　C．with D．by 16．Is it useful ________ us ________ keep a diary? A．of; to 　B．for; to C．to; for 17．It was in 2010 ________ he started his scientific research. A．that 　　　B．when 　　C．which 　　　D．who 18．It was Zhang Qian ________ brought valuable information back to ancient China. A．who 　　　B．where 　　C．which 　　　D．when 拓展练习 19．________ difficult for little kids to control their feelings. A．It’s 　　　B．Its 　　C．It 20．________ impossible to finish all the homework in half an hour. A．It 　　　B．It’s 　　C．Its 21．She is the first student ________ the national prize. A．win　　　B．to win 　　C．winning 　　D．won 22．I hope ________ more about great people's stories. A．learn B．to learn C．learning D．learned 23．It takes him half an hour ________ exercise every morning. A．do B．doing C．to do 24．It’s difficult ________ students ________ master learning skills quickly. A．for; to B．of; to C．for; / 拓展练习 选词填空 1．It’s wrong you to laugh at others. ( of/for) 2．It’s kind you to help me with my homework.( of / for) 3．It is easy him to finish the task. (of/for) 4．It’s foolish you to go out without an umbrella on a rainy day. (of/for) 5．It’s necessary us to finish our homework on time. (of/for) 6．It was clever her to work out the problem quickly. (of / for) 根据句意, 用 for, of 或 that 填空 1．It was brave him to go to the lonely island alone. 2．It is inspiring Marie Curie won two Nobel Prizes in different fields. 3．It is not wise a student to waste too much time playing video games. 4．It’s possible scientists to complete research projects quickly by using DeepSeek. of of of of for for of that for for 35 新人教版/英语/九年级 THE END Unit 2 Inspiring People null 98248.305 eng - iTunNORM 000000D8 000000DE 00000875 00000854 00016AC1 0001501F 00007E86 0000741A 00011939 00010E4E� eng - iTunSMPB 00000000 00000210 00000916 000000000042115A 00000000 003BD65E 00000000 00000000 00000000 00000000 00000000 00000000� $