Remember/Don't forget to lock the door when you leave. 

(It's something you need remember to do).

I don't remember locking the door when I left. 

(You don't have the memory of doing something).

 

How many people go on to study at university?

(finished one stage and go to the next).

We can't go on living in this tiny apartment. 

(continue).

 

I quit to come here. 

(this shows the reason why I quit my job).

I quit drinking fizzy drinks.

(I don't drink fizzy drinks anymore).

 

I regret to inform you that your dog has died.

(I'm sorry to tell you now).

I regret moving away without saving money.

(I'm sorry about the action in the past).

 

I stopped to buy some food. 

(I was doing something then stopped so I could buy food)

I stopped walking,

(I was walking then stopped).

 

He tried to open the bottle.

(He attempted to open the bottle, but couldn't)

Try restarting your computer to fix the problem. 

(It's one of many options).