Các động từ có thể đi kèm V-ing hoặc to V-inf

*REMEMBER
-I remember doing sth = I did it and now I remember this.
You remember doing sth after you have done it.
Ex: I'm absolutely sure I locked the door. I clearly remember locking it.
-I remembered to do sth = I remembered that I had to do it, and so I did it.
You remember to do sth before you do it.
Ex: I remember to lock the door when I left but I forgot to shut the windows.

*REGRET
-I regret doing sth = I did it and now I'm sorry about it.
Ex: I now regret saying what I said. I shouldn't have said it.
-I regret to say/to tell you/to inform you = I'm sorry that I have to say (etc..)
Ex: We regret to inform you that we are unable to offer you the job.

*GO ON
-Go on doing sth = continue doing the same thing.
Ex: We must change our ways. We can't go on living like this.
-Go on to do sth = do or say sth new.
Ex: After discussing the economy, the minister then went on to talk about foreign policy.

*TRY
-Try to do = attempt to do, make an effort to do.
Ex: I was very tired. I tried to keep my eyes open but I couldn't.
-Try -ing
Ex: The photocopier doesn't seem to be working. Try pressing the green button.