I think it’s a good idea.
I don’t think it’s a good idea.
I imagine losing her.
I can't/don't imagine losing her.
I want to answer that!
I don't want to answer that!
We both agreed to pack the luggage.
We both agreed not to pack the luggage.
He asked me to be late.
He asked me not to be late.
Karen decided to go to Japan.
Karen decided not to go to Japan.
Let’s go out tonight, it's raining a lot.
Let’s not go out tonight, it's raining a lot.
Let’s ignore the benefits of it.
Let’s not ignore the other benefits.
There are tourists at this time of year.
There are no tourists at this time of year. / There aren't any tourists at this time of year.
Some of the hotels had empty rooms.
None of the hotels had empty rooms.
Forget your coat!
Don't forget your passport!
There was a delay at the airport.
There was no delay at the airport. / There wasn't any delay at the airport.
