be动词的用法

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,精选课件,*,人教版七年级英语上册知识点,1,精选课件,be动词用法(一般现在时态),宣威市文兴乡一中,徐玉娥,2,精选课件,1.运用口诀：,我用,am，,你用are，,is跟着他(he)她(she)它(it)，,单数用is，,复数用are.,3,精选课件,用法演示：,1.I,am,a girl.,2.You,are,a teacher.,3.He,is,my father.,4.She,is,fine.,5.It,is,a ruler.,6.His pen,is,red.,7.My cat,is,nice.,8.We,are,friends.,9.They,are,good boys.,4,精选课件,2.句型转换：,否定句：,在be动词am,is,are后加not,并作相应的缩写为 amnt,isnt,arent.,一般疑问句：,把be动词 am,is,are提到句首，大写首字母,句末加问号，读为升调.,肯定回答用:Yes,主语+am/is/are.,否定回答用:No,主语+amnt/isnt/arent.,5,精选课件,例句演示：,1.You are a boy.,You arent a boy.,Are you a boy?,Yes,I am.,(肯定回答不能缩写.),No,Im not.,6,精选课件,2.It is a green ruler.,It isnt a green ruler.,Is it a green ruler?,Yes,it is.,No,it isnt.,7,精选课件,3.Im a good student.,Im not a good student.,Are you a good student?,(变为一般疑问句时第一人称换为第二人称),Yes,I am.(肯定回答不能缩写.),No,Im not.,8,精选课件,4.This is my key.,This isnt my key.,Is this your key?,Yes,it is.(肯定回答不能缩写.),No,it isnt.,注：以this,that 作主语的问句，回答用Yes,it is.No,it isnt.而以these,those作主语的问句，回答用Yes,they are.No,they arent.,9,精选课件,Thank you,10,精选课件,