Unit4Grammar语法课件-2024-2025学年沪教牛津版九年级英语下册

Grammar: it 的常见用法 UNIT 4 Natural disasters 通过本节语法课，你将会： 1. 掌握it作代词的基本用法 2. 学会it作形式主语的常见句型 3. 了解it作形式宾语的基本句型 QUESTIONS： What’s the weather like today? What’s the time now? What is the date today? What is the season now? How far is your home from school? Answer these questions below. Lead in 在你的回答中， it分别指代什么？ It 是一个特殊的代词，它有两重意义。 单词 意义 用法 例子 it 1.代词 2.形式主语 /形式宾语 指代事物，前面 提到过的事 表示时间,天气， 季节等。 出现在固定句型 （背诵） Your dress is beautiful. I like it. It is Thursday. It is 12 o'clock. It is boring for me to stay at home. It is kind of you to help me with my English. I find it hard to finish homework. 1. it 作代词的基本用法 it 作代词的用法 ——The mascot(吉祥物) is a lovely and cute panda! 1. it指代事物或前面提到过的事物: Yeah. I love it so much!—— mascot(吉祥物) 2. it指代时间和天气 It is freezing cold. How is the weather today in SZ? What time is it now? It is ___?___o'clock now. Your school Your home How far is it from your school to your home? It is only five minutes’ walk. 3. it指代距离 How far? 4. it表示情况,或指代this, that: What’s this ? It is a Bing Dwen Dwen. 4. 不清楚对方性别时，可用it指代对方 Is it a boy or a girl? 5. it用于某些句型 It's time for sth.该做某事了。 It' s time to do sth.该做某事的时候了 It's time for sb. to do sth.某人该干某事了。 It's first( second)time+that 从句 某人第几次干某事。(从句谓语用现在完成时) It's+时间段+ since从句 自从....有一段时间了。 it 位于句首 1. now/ for supper/ it/ time / is __________________________________________ 2.autumn/ in Australia/ now/ it/ is __________________________________________ 3.about five kilometres/ it/ is/ to the park __________________________________________ 4.windy/ was/ it/ yesterday __________________________________________ Put the words in the correct order to make meaningful sentences. It is time for supper now. It is autumn in Australia now. It is about five kilometres to the park. It was windy yesterday. 2. it 作形式主语 英语中不定式、动名词、主语从句在作主语时主语往往显得很长，使整个句子看上去有点 头重脚轻。这样就借助“it”来作形式上的主语，而把真正的主语移到句子后边去，使全句看上去平稳一些。 “it”没有实际的意义，但不可以省略。 it作形式主语 句型1. It + be + for sb. + to do sth. 做某事对于某人来说怎么样 形容词必须是表示事情的形容词。 如：important, easy, necessary,difficult 上网课对大卫来说很简单。 It’s easy for David to study online. 句型2. It + be + of sb. + to do sth. 某人做某事某人怎么样 形容词必须是能表示人的形容词。 如：nice，kind, brave,clever, foolish 你肯帮我,你人太好了。 It’s kind of you to help me. =You are kind to help me. it作形式主语的常见句型 句型3. It + be+ 名词短语+to do 做某事是.... It is our duty to protect the environment.保护环境是我们的责任。 It is our responsibility to protect the Earth. 保护地球是我们的责任。 It is important to stay calm when there is a fire. It is dangerous to start a fire in the forest. 【练习】Put the words in the correct order to make meaningful sentences. It is a good idea to take an umbrella. It is nice to have a picnic in the park. 【练习】Put the words in the correct order to make meaningful sentences. It seems that a typhoon is coming. It appears that the flight has been cancelled. It seems that something bad has happened to her. 句型4. It + seems / appears that好像...... It seems that he didn't tell the truth 他好像没有说出真相。 it作形式主语的常见句型 【练习】Put the words in the correct order to make meaningful sentences. it作形式主语的常见句型 句型5. It + be + no use / no good + 动名词（v-ing） 做某事是没用的 【翻译】覆水难收. _____________________________________ 句型6. It + be + done ( reported / said / told / known…) + that 据报道、据说、据获悉........ 据说他已经出国学习了。 It is said that he has studied abroad. 【填空】大家都知道这座大桥要提前完工。 It is _____________ that the bridge will be completed ahead of time. It is no use crying over the spilt milk known 3. it 作形式宾语 这种情况通常只用于能带以名词或形容词作宾语补语的动词后面。 【常用句型】 feel/ think/ find +________ +adj. +to do … 我觉得/认为/发现 做某事是怎样的 【例句】 I found it not easy to get along well with Jim. 我发现和吉姆相处好不简单。 【填空】我认为学好英语很重要。 We all think______ ___________ to learn English well. it作形式宾语 it it出现在句中， 在动词后 important it It 的常见用法 用法 例句 1 用作人称代词代替前面提到过的事物 The book is not mine. It’s Mary’s. 2 用来代替指示代词 — What’s this? — It’s a dictionary. 3 指时间、季节、天气、气候 It’s spring now. It’s warm. 4 指距离 It is a long way to the hospital. 5 作形式主语 It is difficult to finish the work in two days. It is a pity that you didn’t pass the test. 6 作形式宾语 I found it interesting to study English. Sum up! it的常见句型 句型 例句 It is+adj. / n.+ (for sb.) to do sth. It is necessary for us to do some reading every day. It is a rule to arrive at the office on time. It is+adj. +of sb. to do sth. It is honest of you to tell the truth. It is a+n.+that ... It is a pity that you didn’t come to the party. It seems / appears that ... It seems that we have to find another way. It is said / reported / believed that ... It is said that Mr. Smith is from Australia. It is time for sth. It is time for sb. to do sth. It’s time for class. It’s time for us to go home. It takes / will take / took (sb.)+时间段+to do sth. It took him two hours to finish the report. It’s one’s turn to do sth. It’s your turn to clean the classroom. 一．选择填空 ( ) 1.Have you seen my watch? Yes, ______is on the desk. A. It B. this C. it D. that ( ) 2. ---I hear the Whites have a new baby. --- Oh, is ________ lovely? A. he B. she C. they D. it ( ) 3. --- There is a knock at the door. _______? --- It is me. A. Who is he B. Who is that C. Who is it D. Who is she C C D 一．选择填空 ( ) 4. What is the weather like today? ________ is very hot, isn’t it? A. it B. It C. Weather D. It’s ( ) 5. How far is _______ from here to the railway station? _______ about ten minutes’ walk. A. it; It B . it; It’s C. It; It D. it; Its ( ) 6. Is that a pen or a pencil? _______ is a pencil. A. This B. That C. It D. They B B C ( ) 7. What is the date today, the 18th or the 19th? Neither. ________ the 20th. A. It B. That C. This D. It’s ( ) 8. I bought a knife and lent ______ to him. A. it B. that C. one D. ones ( ) 9. _______ is very difficult to remember all their names. A. That B. It C. This D. It’s D A B ( ) 10. I found _______ very difficult to get to sleep last night. A. it’s B. it C. that’s D. this ( ) 11. ____ was Bob _____ I met in your room yesterday. It, whom B. That, who C. It, that D. This, who ( ) 12. ____ was in your room _____ I met Bob yesterday. A. It, who B. It, that C. That, who D. That, that B C B Thanks $$