介绍:
Two-way communication
主语+am/is/are +表语(名词/形容词)
My name is David.
Her name is Jane.
She is my sister.
She is a happy girl.
I am also happy.
We are both happy because our parents are kind.
What is that?
It is a camera.
Is it your camera?
Yes, it is.
Is this also a camera?
No, this is a tape.
Is that your tape recorder?
No, that is my radio.
Where is your tape recorder?
It is in my bedroom.
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