Unit 2 第3课时 Section A 4a-4c-【七彩课堂】2026-2027学年九年级上册英语同步课件（人教版·新教材）

Unit 2 Inspiring People Section A 4a—4c Objectives To learn the use of "it" as a formal subject. To learn new words: necessary, seed, childhood, dynasty, western, region. To use expressions: come true, in order to, send sb to do sth, succeed in doing sth. Grammar Focus It was very creative of him to design it. It is important for seed banks to include many different kinds of seeds. It was important to him that everyone should show the same kindness and care to everyone else, whether they were family, friends, or strangers. it作形式主语 形式主语是指用it放在句首充当语法主语，而把真正的主语（通常是不定式、动名词或从句）放在句子后面。这可以避免句子“头重脚轻”，使表达更平衡。形式主语的3种主要类型如下。 1. 真正主语为不定式 （1）It + be + 形容词/名词 + (for / of sb) to do sth. ▶ It is important to learn English well. 学好英语很重要。 ▶ It is a good idea to start early. 早点出发是个好主意。 注意：如果形容词是描述人的性格或品质（如kind, nice, clever, stupid），介词用 of；如果只是描述事情本身的性质（如easy, difficult, important），介词用 for。 ▶ It was kind of you to help me. 你帮我真是太好了。 （kind描述“你”的品质） ▶ It was foolish of him to make the same mistake. 他犯同样的错误真愚蠢。 （foolish描述“他”的品质） ▶ It is important for us to learn from mistakes. 对我们来说从错误中学习很重要。 （important描述“学习”这件事的性质） ▶ It is difficult for me to understand this sentence. 对我来说理解这个句子很难。 （difficult描述“理解句子”这件事的难度） （2） It + 动词 + to do sth. 除动词be以外，动词take, cost, need, require, make, sound, occur等也可用it作形式主语。 ▶ It took us three years to complete the project. 我们花费三年时间才完成了这项工程。 ▶ It sounds reasonable to do it this way. 听起来这样做有道理。 2. 真正主语为动名词（-ing形式） 这种结构通常用于表示习惯、事实或建议，且谓语多为固定搭配（如useless, no good, no use, a waste of time等）。 结构：It + be + 名词/形容词 + doing sth. ▶ It is no use crying over spilt milk. 覆水难收/为打翻的牛奶哭泣是没用的。 ▶ It is a waste of time playing computer games all day. 整天玩电脑游戏是浪费时间。 3. 真正主语为名词性从句 这种结构通常用于陈述一个事实或观点。 （1） It + be + 形容词/名词/过去分词 + that从句. ▶ It is a pity that you can't come to the party. 你不能来参加聚会真遗憾。 ▶ It is clear that he is telling the truth. 很明显他在说实话。 ▶ It is said that Li Hao has been to Europe. 据说李昊去过欧洲。 （2） It + 不及物动词 + that从句. 这里的动词通常表示“发生”“看起来”“出现”等状态，而不是具体的动作。 ▶ It seems that everyone is ready. 似乎大家都准备好了。 ▶ It happened that I was out when you called. 你打电话的时候碰巧我出去了。 （3）It + be + 形容词/名词 + 疑问词（what, when, where, how ...）引导的从句 ▶ It doesn’t matter where we will go. 我们去哪里都没关系。 ▶ It is still a mystery why they lied. 他们为什么撒谎仍然是个谜。 Complete each sentence with a famous person or someone you know of. 4a 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 ... It was difficult for ... to do that kind of work back in those days. It's really very nice of ... to support and encourage ... It was great of Yuan Longping to develop a new kind of rice and help reduce hunger. It was amazing that Michael Faraday did research in physics and chemistry even though he didn't receive a formal education. It was difficult for women to do that kind of work back in those days. It's really very nice of my father to support and encourage my studies. 参考答案 4b Rewrite each sentence using the words in brackets. 1. We listen to our teacher's advice. (necessary) → . 2. Tall trees can grow from tiny seeds. (amazing) → . 3. Confucius said that we should treat our elders with respect. (wise) → . . It is necessary for us to listen to our teacher's advice It is amazing for tall trees to grow from tiny seeds It was wise of Confucius to say that we should treat our elders with respect 4. Professor Gui's childhood dream of becoming a space scientist came true through his efforts and hard work. (inspiring) → . . . 5. Victor Hugo stood up for the common people he cared about. (brave) → . . It was 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 4c Complete the passage with the correct sentence parts. In what ways do you find Zhang Qian inspiring? Give your reasons. 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 A D 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 travels 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 remember the past and find ways to do more for a better future. B C I find Zhang Qian’s strong will inspiring because he never forgot his task even though he was once caught by the enemy.（仅供参考） Language Points 1. Tall trees can grow from tiny seeds. 大树可以从微小的种子长成。 seed n. 种子 ▶ In spring, we plant seeds in the garden. 春天，我们在花园里播种。 ▶ Seed banks protect plants from disappearing forever. 种子库保护植物不会永远消失。 植物部位的相关单词 拓展 root 根 stem 茎 trunk 树干 branch 树枝 leaf 叶子 thorn 刺 flower 花 petal 花瓣 fruit 果实 nut 坚果 2. Professor Gui's childhood dream of becoming a space scientist came true through his efforts and hard work. 通过自己的努力和勤奋，桂教授实现了成为航天科学家的童年梦想。 短语 意思 用法 come true 实现；成为现实 主语只能是“梦想/愿望/预言……”，不能是人 ▶ After years of hard work, his dream of becoming a scientist finally came true. 经过多年的努力，他成为科学家的梦想终于实现了。 ▶ I hope your wish will come true. 我希望你的愿望会实现。 p.s. 想表示“我的梦想实现了。”时应该说“My dream came true.”，“I came true my dream.”不合语法（人不能直接“实现”什么，要用make ... come true）。 Exercises Ⅰ. 单项选择。 1. It's no use the pink dress for a red one, for she likes neither of the color. A. exchange B. exchanging C. exchanged D. to exchange 2. is important us to master a new technology. A. It；of B. It；for C. That；of D. That；for √ √ 3. Is exciting for them to play with snow in winter in the north? A. it B. this C. that D. they 4. It's easy to take the underground train to most places. A. 表语 B. 主语 C. 宾语 D. 谓语 5. It took the medical team two weeks the right way to cure the patient. A. find out B. to find out C. finding out D. found out √ √ √ Ⅱ. 连词成句。 1. led to, some important findings, the experiments, the discovery of (.) 2. when, in difficulties, should, we, are, be brave, we (.) 3. my, dream, true, hope, I, can, come (.) The experiments led to the discovery of some important findings. We should be brave when we are in difficulties. I hope my dream can come true. 中考链接 1. 人们认为，茶在六至七世纪传到了朝鲜和日本。 that tea was brought to Korea and Japan during the 6th and 7th centuries. 2. 第一，均衡饮食很重要。 First,  to have a balanced diet. It's believed it's important Homework Recite the important sentences in the passage on Page 15. Practice more exercises to master the grammar learnt in this part. 伴你成长 $