人教版（2019）必修一 it作形式主语和宾语的用法 课件

这是一份高中英语人教版 (2019)必修 第一册本册综合课前预习课件ppt，共15页。PPT课件主要包含了it 作形式主语，形式主语，观察以下句子，不定式短语，动名词短语，句型结构，It is + ，adj ，+that ，+that 等内容，欢迎下载使用。

It is amazing that at my age I am still fit.2. It is said that he had passed the exam.3. It is a pity that he is ill. 4. It is easier t fall than t rise.5. It is n use crying ver spilt milk.
it可以放在句中代替____, ___________ 或 ____________ 作形式主语
1.It is amazing that at my age I am still fit.
It is + adj. (imprtant, necessary...) +that + sb. + (shuld) d sth. 　　
it 是形式主语，真正的主语是that 引导的从句。
该句型中，如果形容词是imprtant,right, necessary等，that后的从句中要用虚拟语气（shuld + 动词原形），shuld 可以省去。
It is imprtant that we (shuld) learn English well.
+ that ...
2. It is said that he had passed the exam.
句型结构：It is+
译为 “据说,据报道，据悉……”that引导的从句是真正 的主语
dne ( said, reprted...)
3. It is a pity that he is ill.
句型结构：It is +
该句型中，that后的从句一般用虚拟语气（shuld + 动词原形），shuld可省去,表示出乎意料，常译为＂竟然＂。
n. (a pity, a shame...)
4. It is easier t fall than t rise.
句型结构：It is +
it 作形式主语，代替真正的主语 t d sth.
5. It is n use crying ver spilt milk.
该句型中的真正主语是动名词短语,译为“做...是没有用/好处的”。
1. It is + adj. + that ...
2. It is + adj. (imprtant...) +that + sb. + (shuld) d sth.
3. It is+ dne ( said...) +that ...
4. It is + n. (a pity...) +that ...
5. It is + adj. + t d sth.
6. It is n use/gd + ding sth.
总结：it作形式主语的常见句型
1.We think it imprtant t learn English.
it 在句中作形式宾语
2. I wuld appreciate it if yu culd cme t my birthday party.
3. Yu may depend n it that we shall always help yu.
it作某些动词（make, think, find, cnsider...）的宾语
某些表示“喜、怒、哀、乐”的动词（like, enjy, hate, appreciate...）往往用it作形式宾语，再加上if/when等引导的宾从。
某些动词短语（ask fr, depend n, insist n...）后常用it作形式宾语。
为保持句子结构平衡，避免头重脚轻，常用it代替不定式、动名词或从句在句中作形式宾语。
Crrect the sentences
1. We think that ur duty t clean ur classrm every day.
2. Yu can depend n that I will keep my prmise.
3. I think it n use t arguing with him.
4. I’d appreciate if yu can give me sme useful infrmatin.
为了保持句子结构平衡，It在句中代替从句、不定式和动名词作形式主语或宾语
1.Review what yu have learnt tday.