Isn't it? Is it? Have/used to have? Isn't it? No? Won't it?

No? Isn't it? t？ It? This is a camera. ?

No? Isn't it? Test my car. ?

no

1be+be？ Me? Is it? Not now/in the past/in the past

I'm not hungry.

I am not a programmer.

2be？ Really? Will. +be？ Really? will not

They are not playing chess.

She is not watching TV.

can，could，may，may，may，must，should？ +can，could，may，might，must，should？ no

She couldn't help laughing.

The old man can't read or write.