【第一篇:be 动词】
(1) Basic form: am/are/is
(2) 肯定和否定句 I am(not) from London.
My eyes are(not) small.
My hair is(not) long.
(3)一般疑问句: Am I a Chniese? Yes, you are. No, you aren't.
Are they American? Yes, they are. No, they aren't.
Is the cat fat? Yes, it is. No, it isn't.
【第二篇:there be 结构】
肯定句: There is a …
There are …
一般疑问句:Is there …? Yes, there is./ No, there isn't.
Are there…? Yes, there are. /No, there aren't.
否定句: There isn't …. There aren't….
【第三篇】
形式: be + verb +ing
eg: I am(not) doing my homework.
You/We/They are(not) reading.
He/She/It is(not) eating.
动词 -ing 的形式
Most verbs +ing walk-walking
Verbs ending in e -e + ing come-coming
Short verbs ending in a vowel + a consonant run -running swim-swimming