要点突破it的用法1ppt课件.ppt

要点突破要点突破—it的用法的用法11、指代前面提到、指代前面提到过过的的事物The book on the desk is not mine. It is Jim's.2、代替指示代、代替指示代词词this或或that --What's that? --It is a pencil.3、指代、指代婴婴儿或不明身儿或不明身份的人 Someone is knocking at the door. Please go and see who it is.4、指代、指代时间时间或季或季节节.--What's the time now? --It's ten o'clock.要点突破要点突破—it的用法的用法25、指代、指代天气What's the weather like today? --It's sunny.6、指代、指代距离 How far is it from your school to your home?7、用作、用作形式主形式主语语，，常用于下常用于下列句型中列句型中(1) （（1））It is +adj.+ (for/of sb.) to do sth. It is important for us to work hard. （（2））It's time to do/for/that... It's time to get up/for lunch/that we went home.要点突破要点突破—it的用法的用法37、用作形、用作形式主式主语语，，常用于下常用于下列句型中列句型中 (3)It seems that... 看起来好像看起来好像...... (4)It's one's turn to do...轮到某人做轮到某人做...... (5)It's+adj.+that从句从句8、作形、作形式式宾语宾语 Do you think it necessary to learn to wait in line?9、用于、用于强强调调句型句型“It is/was+ 被被强强调调部分部分 + that/who + 其他成分其他成分” It is he who goes to school by bike every day.itonethat做代做代词时的区的区别1. it特指上下文提到的同一特指上下文提到的同一对象象,是同一事物是同一事物.Eg: The book is mine. It is very interesting. 这本本书是我的，它很有趣。

是我的，它很有趣2、、one泛指上下文提及的同泛指上下文提及的同类事物中的一个，事物中的一个，同同类而不同物而不同物eg: --Who has a pen? 谁有一支有一支钢笔？笔？ --I have one. 我有一支我有一支3、、that常用于比常用于比较结构中，代替前面提到的构中，代替前面提到的名名词，以避免重复以避免重复eg: The weather in Beijing is colder than that in Guangzhou in winter. 冬天北京的天气比广州的天气冷冬天北京的天气比广州的天气冷。