Some verbs are followed by -ing, and some are followed by to …
Verbs usually followed by -ing:
admit finish postpone avoid imagine risk consider keep(on) stop deny mind suggest enjoy
For example, see Unit 51.
Verbs usually followed by to …
afford fail offer agree forget plan arrange hope promise decide lean refuse deserve manage threaten
For example, see Unit 52.
Some verbs can be followed by -ing or to … with a difference in meaning:
I remember doing something = I did it and now I remember this.
You remember doing something after you have done it.
I know I locked the door.I clearly remember locked it. (= I locked it, and now I remember this)
He could remember driving along the road just before the accident, but he couldn’t remember the accident itself.
I remember to do something = I remembered that I had to do it, so I did it.
You remember to do something before you do it.
I remembered to lock the door, but I forgot to shut the windows. (= I remembered that I had to lock it, and so I rocked it)
Please remember to mail the letter. (= don’t forget to mail it)
I regret doing something = I did it and now I’m sorry about it.
I now regret saying what I said. I shouldn’t have said it.
It began to get cold and he regretted not wearing his coat.
I regret to say / to tell you / to inform you = I’m sorry that I have to say (etc.):
(from a formal letter) We regret to inform you that we cannot offer you the job.
Go on doing something = continue doing the same thing:
– The president went on talking for hours.
– We need to change. We can’t go on living like this.
Go on to do something = do or say something new:
– After discussing the economy, the president then went on to talk about foreign policy.
The following verbs can be followed by -ing or to …:
begin start continue bother
So you can say:
– It has started raining. or It has started to rain.
– Don’t bother locking the door. or Don’t bother to lock …
But normally we do not use -ing after -ing:
– It’s starting to rain. (not It’s starting raining)