中考语法总结之it和there be(共14张PPT)

中考语法总结之it和there be I．要点 　1、it的用法 　（1）用作人称代词，代替前文提到的无生命的事物，动植物、婴儿及指示代词this, that， 如:I have a new pen. It is beautiful. 　The Browns have a new baby. It's cute. （2）用来表示时间、天气、距离等， 如， 　It's twelve o'clock now. 　It's fine today. （3）用作引导词，代替由不定式，ing形式或从句表示的真正的主语或宾语，如， 　It's no good telling him that. 　It's necessary for you to do so. （4）用在强调结构中，构成强调句式：It is/was +被强调部分+that/who/whom +句子其余部分，可强调除谓语以外的句子其他成分， 如: 　It was this morning that I saw him in the street. 　It was I who saw him in the street this morning. 　It was in the street that I saw him this morning. 　It was him whom I saw in the street this morning. 2、there be句型 　英语表示某时某处或某物时，常用there be句型，这是一种倒装结构， 如， 　There are a lot of students playing on the ground. 　There is going to be a test this afternoon. 当主语有两个或两个以上时，动词be常和最近的那个主语取得一致，如， 　There is a pen and three pencils in the pencil-box. 　There isn't a desk, a bench and three chairs in the room. 　There are lots of people like it, aren't there? there be句型，谓语动词除be之外，还可用其他表示存在，位置移动等意义的不及物动词或