You have a memory of it, like being able to see a movie of it in your head.
Remember + gerund
She remembered ________ (swim) across the lake when she was a child.
swimming
They stopped ________ (play) video games when their parents arrived home.
playing
This is when the thing you do itself is difficult.
Try + to + infinitive
She doesn't mind ________ (wait) for hours at the airport if it means getting a cheaper flight.
waiting
This is when you think of something that you need to do. (obligation).
Remember + to + infinitive
She forgot ________ (call) her friend to confirm their plans for the evening.
to call
She regretted ________ (not study) harder for the exam, as her grades suffered.
not studying
It can mean 'stop forever' or 'stop at that moment'.
Stop + gerund
They prefer ________ (go) hiking in the mountains over going to the beach.
to go
It's when you don't have a memory, of something you've done in the past.
Forget + gerund
Did you forget ________ (turn off) the lights before leaving the office?
to turn off
I regret ________ (inform) you that the concert has been canceled due to unforeseen circumstances.
to inform
we stop something else in order to do a new action
Stop + to + infinitive
She invited her friends ________ (join) her for a picnic in the park next weekend.
to join
It's when you want to do something, but you don't do it.
Forget + to + infinitive
He tried ________ (fix) the leaky faucet himself before calling a plumber.
fixing
We remembered ________ (pack) extra batteries for the flashlight before going camping but we are not sure.
packing
This is when you are sorry about something you did in the past.
Regret + gerund
She struggled ________ (understand) the complex instructions for assembling the furniture.
to understand
The thing you do is not difficult, but you want to see if doing it will have the result that you want.
Try + gerund
We tried ________ (finish) the project ahead of schedule. However, we couldn't.
to finish
We stopped ________ (talk) and listened attentively to the speaker.
to talk
We use this construction when we are giving someone bad news
Regret + to + infinitive
Did you invite your neighbors ________ (come) to the barbecue this Saturday?
to come