什么是be动词? be动词的三种基本形式为:am, is, are。 be动词的含义: 1,是(表状态)We are very sad 我们都很伤心 The dog is very cute 这只狗很可爱 2,在(表存在,位置)She is in china 她在中国 The pen is on the desk 钢笺在桌子上 主词+be动词 1/1 一般来说be动词要根据主词的人称来选择。(如下表)第一人称,单数 I am , I am a boy , 复数 we are, we are students 第二人称,单数 you , you is girl 复数 are , you are young 第三人称,单数he is ,he is right 复数 they are, coming be动词的否定 1/2 含be动词(am, is, are)的肯定句,在be动词后面加not,即可变成否定句时。 格式: 肯定句:主词 + am/is/are +....... 否定句:主词 + am/is/are + not+.......肯定句,He is a good father 他是一个好父亲 否定句,He is not a good father 他不是一个好父亲 2/2 be动词可以跟not缩写在一起 is not =isn't are not = aren'tHe is not a good football player =He isn't a good football player be动词的疑问句 1/2 在谓语是be动词的句子中,将be动词移到主词前,句尾加问号,即可构成疑问句 格式: 肯定句:主词 + am/is/are +....... 疑问句:Am/Is/Are +主词 +.......? 肯定句,it is my pen 这是我的钢笔 疑问句,is it my pen这是我的钢笔吗? be动词的疑问句 2/2 be动词开头的一般疑问句,可用Yes或No回答,而答句中的主词需要用代名词(I she he they we 等)代替 格式: 肯定回答:Yes,主词 + am/are/is. 否定回答:No, 主词 + am/are/is + not 疑问句,is that man your friend? 答,yes, he is / no,he isn't 错误,yes,the mani s |
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