Unit 2 Section A Grammar (4a-4c) 讲义 2026-2027学年英语人教版九年级上册

本讲义聚焦初中英语it作形式主语的三种核心句型，通过观察评价句导入，系统梳理It is/was + adj. + of sb + to do sth（品质归人）、for sb + to do sth（属性归事）、that从句（评价事件）的结构，结合选词填空、句型改写及张骞语篇填空构建完整学习支架。 该资料以“鼓舞人心的人物”为主题，将语法学习与文化意识融合，如张骞事迹培养家国情怀。通过“人+be+形容词”判断技巧辨析of/for，提升思维品质，多样化练习增强语言能力，课中助力教师高效授课，课后易错提醒与语言点归纳帮助学生查漏补缺。

Unit 2 Inspiring People Section A Grammar (4a-4c) · 讲义 Unit 2 Inspiring People Section A Grammar (4a-4c)　（讲义 · 学生用） 课时基本信息 课题 Unit 2 Inspiring People — Section A Grammar (4a-4c) 课型 语法课 年级 九年级 课时 第 3 课时 教材 人教版（2024）英语九年级上册（Unit 2，课本 p.15） 主题 it 作形式主语：评价人物与事迹的三种句型 教学重点 it 作形式主语的三种句型结构（It is/was + adj. + of/for sb + to do sth；It is/was + adj. + that 从句，课本 p.15）；品质形容词与属性形容词的辨析 教学难点 of 与 for 的辨析（品质归人用 of，属性归事用 for，课本 p.15）；句型改写时主动词向不定式/that 从句的转换 新词学习 necessary /ˈnesəsəri/ adj. 必要的；必需的（p.15） seed /siːd/ n. 种子（p.15） childhood /ˈtʃaɪldhʊd/ n. 童年（p.15） come true 实现；成为现实（p.15） dynasty /ˈdɪnəsti/ n. 朝代；王朝（p.15） western /ˈwestən/ adj. 西方的；西部的（p.15） （一）语法导入：观察四组评价句 Read the sentences and summarize.（读句子并归纳规律。课本 p.15） ① It was great of Yuan Longping to develop a new kind of rice and help reduce hunger. ② It was amazing that Marie Curie did research in physics and chemistry even though she faced many difficulties. ③ It was difficult for Tu Youyou to do that kind of work back in those days. ④ It's really very nice of Adam's father to support and encourage Adam's exchange study. 【知识点】 it 作形式主语（课本 p.15）：句首的 it 没有实际意义，真正的主语被移到句末（动词不定式或 that 从句），避免句子“头重脚轻”。 三种句型：It is/was + adj. + of sb + to do sth；It is/was + adj. + that 从句；It is/was + adj. + for sb + to do sth 💡 解题思路：对比四个例句：形容词后面跟的是 of sb、that 从句还是 for sb？形容词描述的是“人”还是“事”？ （二）句型一：It is/was + adj. + of sb + to do sth 【过渡语】先看第一类：形容词描述“人”的句子。 例句：It was great of Yuan Longping to develop a new kind of rice and help reduce hunger. 袁隆平研发新品种水稻、帮助减少饥饿，真是太伟大了。 It's really very nice of Adam's father to support and encourage Adam's exchange study. 亚当的爸爸支持和鼓励亚当的交换学习，真是太好了。 规律：it 为形式主语，真正的主语是句末的动词不定式；形容词 great/nice 描述人的品质、性格，后接介词 of。 常用于 of 结构的品质形容词：kind 善良的　polite 有礼貌的　brave 勇敢的　honest 诚实的　careful 细心的　careless 粗心的　clever 聪明的　foolish 愚蠢的　rude 粗鲁的　wise 明智的　nice 好心的　generous 大方的 【知识点】 of 结构口诀（课本 p.15）：品质归人用 of。 It was wise of Confucius to say that... 孔子那样说是明智的（wise 描述 Confucius 这个人的品质）。 变体：It is + adj. + of sb = sb is + adj. + to do（It was brave of Victor Hugo to stand up... = Victor Hugo was brave to stand up...） 【提示框】 判断技巧：把形容词移到人身上说得通就用 of——the man is brave ✓ → It was brave of the man to... （三）句型二：It is/was + adj. + that 从句 【过渡语】第二类：要评价的不是某个人，而是一整件事。 例句：It was amazing that Marie Curie did research in physics and chemistry even though she faced many difficulties. 居里夫人面对诸多困难仍坚持物理和化学研究，真令人惊叹。 规律：it 为形式主语，真正的主语是 that 引导的从句（主语从句）；形容词 amazing 用来评价、描述整件事情。 【知识点】 that 主语从句（课本 p.15）：It is/was + adj. + that + 陈述句。 常用形容词：amazing 惊人的 / inspiring 鼓舞人心的 / wonderful 美妙的 / interesting 有趣的。 that 在从句中不充当成分，口语中有时可省略。 【提示框】 从句内部必须是完整的陈述句语序：It was inspiring that Professor Gui's dream came true.（不能写成 did Professor Gui's dream come） （四）句型三：It is/was + adj. + for sb + to do sth 【过渡语】第三类：形容词描述“事”的性质，人只是做事的主体。 例句：It was difficult for Tu Youyou to do that kind of work back in those days. 在那个年代，屠呦呦做那种工作是很困难的。 规律：句中为避免头重脚轻，用 it 作形式主语，真正的主语是 to do that kind of work；形容词 difficult 描述事情的性质，后接介词 for。 【知识点】 for 结构口诀（课本 p.15）：属性归事用 for。 常用形容词：necessary 必要的 / important 重要的 / difficult 困难的 / easy 容易的 / meaningful 有意义的 / impossible 不可能的 / helpful 有帮助的。 例：It is necessary for a student to listen carefully in class.（上课认真听讲是必要的） 【提示框】 判断技巧：把形容词移到人身上说不通就用 for——the student is necessary ✗ → It is necessary for the student to... （五）基础练习：for 与 of 选词填空 Fill in the blanks with for / of.（用 for 或 of 填空。） 1. It's necessary _____ a student to listen carefully in class. 2. It's easy _____ us to chat online now. 3. It's rude _____ the boy to shout at his mother. 4. It is generous（慷慨的）_____ the rich man to donate so much money to the charity. 5. It's more meaningful _____ fans to support their team even when it loses the game. 6. The store is too far from my home, so it's difficult _____ me to walk there. 7. It's clever _____ the little girl to answer the question correctly. 参考答案：1. for　2. for　3. of　4. of　5. for　6. for　7. of 💡 解题思路：逐题先判断形容词描述“人”还是“事”：rude/generous/clever 是人的品质 → of；necessary/easy/meaningful/difficult 是事情属性 → for。 （六）4b 句型改写：用括号里的词改写句子 【过渡语】掌握了三种句型，来试一试课本上的改写任务。 Rewrite each sentence using the words in brackets.（用括号里的词改写句子。课本 p.15） 1. We listen to our teacher's advice. (helpful / necessary / important) → It is helpful / necessary / important for us to listen to our teacher's advice. 2. Tall trees can grow from tiny seeds. (amazing / interesting / wonderful) → It is ____________________________________________________________ 3. Confucius said that we should treat our elders with respect. (wise) → It was wise of ____________________________________________________ 4. Professor Gui's childhood dream of becoming a space scientist came true through his efforts and hard work. (inspiring) → It was inspiring that ________________________________________________ 5. Victor Hugo stood up for the common people he cared about. (brave) → It was brave of ____________________________________________________ 【提示框】 改写三步：① 括号里的形容词放在 It is/was 之后；② 看形容词定介词（wise/brave→of；amazing/inspiring→that 从句；helpful/necessary→for）；③ 原句剩余部分移到句末（to do 或 that 从句），动词变不定式。 4b 参考答案（课本 p.15）： 2. It is amazing / interesting / wonderful that tall trees can grow from tiny seeds. 3. It was wise of Confucius to say that we should treat our elders with respect. 4. It was inspiring that Professor Gui's childhood dream of becoming a space scientist came true through his efforts and hard work. 5. It was brave of Victor Hugo to stand up for the common people he cared about. （第 1 题课本已给出示例答案） （七）4c 语篇填空：张骞出使西域 【过渡语】最后读一位真正鼓舞人心的人物——丝路先驱张骞，边读边体会三种句型的运用。 Complete the passage with the correct sentence parts. In what ways do you find Zhang Qian inspiring? Give your reasons.（选择正确的句子部分补全短文，并说说张骞哪些方面鼓舞了你。课本 p.15） 待选句子：A. It is important for us　B. It was really brave and admirable　C. It is always inspiring　D. It seemed impossible for him ______ to read about great people and learn their stories. Recently, I read about Zhang Qian, the pioneer of the famous Silk Road. In order to help defeat his enemies, Emperor Wu of the Han Dynasty sent Zhang Qian to find the Yuezhi people. Unfortunately, Zhang Qian was caught by the enemy. ______ to finish his task or to return home. However, around 10 years later, he got a chance to run away, and he finally succeeded in finding the Yuezhi people. ______ that he never forgot his task, and his travel also brought back valuable information about the Western Regions. Later, he was sent to these places again to build relationships. Stories like this give us power and inspiration. ______ to understand the past and find ways to do more for a better future. 【知识点】 语篇中的三种句型（课本 p.15）： C. It is always inspiring to read about...（to do 作真正主语） D. It seemed impossible for him to finish...（for 结构） B. It was really brave and admirable that he never forgot his task.（that 主语从句） A. It is important for us to understand the past...（for 结构） 【提示框】 语篇填空看空格后的接续：后接 to do → 选 of/for 开头的选项；后接 that 从句 → 选 B；再看语义（impossible 呼应“被敌人抓住”的困境）。 4c 参考答案（课本 p.15）：第 1 空—C　第 2 空—D　第 3 空—B　第 4 空—A 💡 解题思路：先看每个空格后接 to do 还是 that 从句，缩小选项范围，再代入语义验证：被俘后逃亡十年才完成任务 → impossible 最贴切。 4c 语篇人物：丝路先驱张骞 易错提醒 判断技巧：把形容词移到人身上说得通就用 of——the man is brave ✓ → It was brave of the man to... 从句内部必须是完整的陈述句语序：It was inspiring that Professor Gui's dream came true.（不能写成 did Professor Gui's dream come） 判断技巧：把形容词移到人身上说不通就用 for——the student is necessary ✗ → It is necessary for the student to... 改写三步：① 括号里的形容词放在 It is/was 之后；② 看形容词定介词（wise/brave→of；amazing/inspiring→that 从句；helpful/necessary→for）；③ 原句剩余部分移到句末（to do 或 that 从句），动词变不定式。 语篇填空看空格后的接续：后接 to do → 选 of/for 开头的选项；后接 that 从句 → 选 B；再看语义（impossible 呼应“被敌人抓住”的困境）。 答题技巧 for/of 选择两步：① 找出句中的形容词；② 用“人 + be + 形容词”检验——说得通用 of，说不通用 for。 句型改写先定“骨架”（It is/was + adj. + of/for/that），再按骨架把原句拆填：主动词变 to do，完整事件套 that 从句，人称代词变宾格。 语篇型语法填空：先通读把握大意，再按“接续成分→语义逻辑”双重锁定答案，最后回读检查上下文是否连贯。 语言点归纳 句型一：It is/was + adj. + of sb + to do sth：of 结构：It is/was + adj.（人的品质：kind/brave/wise/clever/nice/generous...）+ of sb + to do sth 句型二：It is/was + adj. + that 从句：that 主语从句：It is/was + adj.（评价整件事：amazing/inspiring/wonderful...）+ that + 陈述句 句型三：It is/was + adj. + for sb + to do sth：for 结构：It is/was + adj.（事情属性：necessary/important/difficult/easy/meaningful...）+ for sb + to do sth 课堂总结 本课时围绕“it 作形式主语”语法核心（课本 p.15）： 1. 掌握 6 个核心词汇：necessary, seed, childhood, come true, dynasty, western 2. 归纳并运用三种句型：It is/was + adj. + of sb + to do sth（品质归人）/ It is/was + adj. + for sb + to do sth（属性归事）/ It is/was + adj. + that 从句（评价事件） 3. 完成 for/of 选词填空、4b 句型改写与 4c 张骞语篇填空，学会用评价句型谈论鼓舞人心的人物 随堂笔记 AI生成 AIGC标识: d4824770-5ef8-48b3-95a5-88b101b2e581 第 页 学科网（北京）股份有限公司 $