Be的用法口诀:
我用am,你用are,is连着他,她,它
单数名词用is,复数名词全用are
变疑问,往前提,句末问号莫丢弃
变否定,更容易,be后not莫忘记
疑问否定任你变,句首大写莫迟疑
对其进行解读之前我们先回顾一个知识点:Be动词的一般变化形式有: is, am, are, were, was,being, to be,been, 今天我们主要看 其中三个:“is, am, are”
解读:
- “我用am,你用are,is连着他,她,它”
I 与am 连用, you 与are, it/he/she 用 is
例句:
I am a student.
You are my friend.
He/she is a good friend.
It is a book.
- "单数名词用is,复数名词全用are"
指的是主语如果是单数名词,谓语动词是be动词时,我们用is,如果是复数名词,我们就用are,以apple 为例,一起看看具体例句:
An apple is not enough to eat.
Three apples are enough for me to eat.
- "变疑问,往前提,句末问号莫丢弃"
指的是我们将一般陈述句,变成一般疑问句时,将Be动词提到句首,同时句尾加上?。
例句: Tom is a good boy.
变一般疑问句: Is Tom a good boy?
- “变否定,更容易,be后not莫忘记”
指我们将一般陈述句,变成其对应的否定形式时,直接在Be动词后加 not。
例: He is a teacher.
变否定, He is not a teacher.
- "疑问否定任你变,句首大写莫迟疑"
指的是将将一般陈述句,变成一般疑问句时,将Be动词提到句首时,其相应动词的首字母要大写。
例:
Are you a student?
Is Tom a good boy?