We could hang out and go hiking.
We couldn't hang out and go hiking.
You should eat more.
You shouldn't eat more.
He will marry me.
He won't marry me.
We have been to Australia.
We haven't been to Australia.
He's a police officer.
He isn't a police officer.
It's going to rain.
It's not going to rain.
We're tired.
We aren't tired.
She has done all her homework.
She hasn't done all her homework.
You can leave the room.
You can't leave the room.
The episode was boring last night.
The episode wasn't boring last night.
I miss my childhood.
I don't miss my childhood.
She has much money.
She doesn't have much money.
The students were busy yesterday.
The students weren't busy yesterday.
It would be fun.
It wouldn't be fun.
They forgot about me.
They didn't forget about me.
We used to play video games together.
We didn't use to play video games together.