Unit 2 语法精讲精练 2026-2027学年人教版英语九年级上册

Unit 2 语法精讲精练 一、核心语法：it 作形式主语 （一）句型 1：It is + 形容词 + of sb. to do sth. 适用形容词：描述人的品质、性格 kind, nice, good, brave, wise, foolish, careless, honest, generous 含义：某人做某事，真是…… 句式拆解 It（形式主语）+ be + 品质形容词 + of + 人 + to do sth.（真正主语） 例句：It was brave of Yuan Longping to devote himself to rice research. 袁隆平投身水稻研究，十分勇敢。 It is wise of Confucius to teach people to respect elders. 孔子教导人们尊敬长辈，十分明智。 同义转换（可还原成 sb. + be + 形容词 + to do） He was brave to stand up for common people. = It was brave of him to stand up for common people. （二）句型 2：It is + 形容词 + for sb. to do sth. 适用形容词：描述事情本身难易、重要、价值 important, necessary, helpful, difficult, easy, amazing, interesting, inspiring, wonderful 含义：对某人来说，做某事是…… 句式拆解 It（形式主语）+ be + 事物形容词 + for + 人 + to do sth.（真正主语） 例句：It is necessary for us to follow teachers’ advice. 对我们来说，听从老师建议很有必要。 It was difficult for scientists to do research long ago. 在过去，科学家开展研究十分艰难。 同义转换（不可直接用人作主语） Keep trying is important for us = It is important for us to keep trying. （三）两类句型核心区分 句型 搭配形容词类型 介词 核心逻辑 例句 It’s + adj. + of sb. to do 人的品格：brave/wise/nice/careless of 夸赞 / 批评人的品性 It’s nice of her to encourage me. It’s + adj. + for sb. to do 事情属性：important/difficult/amazing for 评价这件事本身 It’s difficult for kids to finish the task. （四）时态变化规则 描述过去发生的事：It was + adj. …It was inspiring that he realized his dream. 描述常态、客观道理、现在：It is + adj. …\It is important for us to learn from great people. （五）拓展：It was + adj. + that 从句 当后面是完整句子，不用不定式 to do 时，用 that 引导从句，仅用过去时描述往事。 结构：It was + inspiring/amazing/strange + that + 完整陈述句 例句：It was amazing that she kept doing research all her life. 令人惊叹的是，她一生都坚持科研。 二、两大句型改写方法 普通陈述句 → It 形式主语 for 句型 原句：We need to keep practising. 改写：It is necessary for us to keep practising. 主语是人、体现品格 → It 形式主语 of 句型 原句：He was brave to fight for ordinary people. 改写：It was brave of him to fight for ordinary people. 完整事件句子 → It was + adj. + that 从句 原句：His dream finally came true. 改写：It was inspiring that his dream finally came true. 三、分层专项训练 专项一 4a 基础补全句子 仿照句式填写合适名人 / 身边人物 It was great of ________ to develop a new kind of rice and help reduce hunger. It was amazing that ________ did research in physics and chemistry even though life was hard. It was difficult for ________ to do that kind of work back in those days. It's really very nice of ________ to support and encourage me all the time. It is always important for ________ to keep going in life. 专项二 4b 句型改写（用 it 作形式主语改写，固定形容词提示） Tall trees can grow from tiny seeds. (amazing) → It is ________________________________________________ Confucius said that we should treat our elders with respect. (wise) → It was wise of ________________________________________ Professor Gui’ s childhood dream of becoming a space scientist came true through his efforts and hard work.(inspiring) → It was inspiring that __________________________________ Victor Hugo stood up for the common people he cared about.(brave) → It was brave of ______________________________________ 专项三 单项选择（区分 of /for、时态、that 从句） ( )1. It’s kind ______ you to help me with my study. A. for B. of C. to D. with ( )2. It is important ______ students to read stories of great people. A. of B. with C. for D. at ( )3. ______ amazing that Zhang Qian finished his hard task ten years later. A. It was B. It is C. That was D. This is ( )4. It was ______ of Zhang Qian never to forget his task in danger. A. difficult B. brave C. necessary D. helpful ( )5. It ______ inspiring for us to learn the spirits of pioneers now. A. was B. are C. is D. were ( )6. It is wonderful ______ trees can grow from small seeds. A. of B. that C. for D. to ( )7. It was careless ______ him to lose the important old records. A. for B. with C. of D. at ( )8. —Why is it hard for ancient scientists to do research? —Because ______ no good tools long ago. A. it had B. there were C. they have D. there is 专项四 短文选词填空 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, Iread 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 10years 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. 专项五 句型转换 She is generous to share her knowledge with others.（用 it of 句型改写） To keep learning is necessary for every teenager.（用 it for 句型改写） He worked hard and made his space dream come true.（用 It was inspiring that 改写） It was wise of Yuan Longping to study hybrid rice.（还原成 sb be adj to do） It is amazing for us to see small seeds grow into big trees.（还原不定式作主语） 专项六 句子改错 It was brave for Zhang Qian to finish his hard task. ____________ It is wise of we to listen to old people’s advice. ____________ That amazing that trees grow from tiny seeds. ____________ It was inspiring of that his dream came true at last. ____________ It difficult for ancient people to travel far in the past. ____________ 专项七 完成句子 1. 袁隆平培育杂交水稻，他真伟大。 It was great ________ Yuan Longping ________ hybrid rice. 2. 对我们来说，学习伟人的精神十分重要。 ________ important ________ us ________ learn spirits of great people. 3. 张骞身处险境仍不忘使命，十分令人敬佩。 It was admirable ________ Zhang Qian ________ his task all the time. 4. 令人鼓舞的是，很多人坚持追逐自己的梦想。 It ________ inspiring ________ lots of people keep chasing their dreams. 5. 孔子教导我们尊敬长辈，十分明智。 It was wise ________ Confucius ________ us to respect elders. 专项八 书面表达小练笔 话题：Write 6 sentences about Zhang Qian，必须使用至少 2 种 it 形式主语句型，说明你为什么觉得张骞鼓舞人心。 学科网（北京）股份有限公司 $