Verbs followed by '-ing' or by 'to' + infinitive

Question 1

stop
Stop + -ing means the action is not happening any more.
Stop + to + infinitive means that someone or something stops an activity so that they can do something else.

I’ve stopped … the newspaper because now I read the news online.
He stopped the video… the students some questions.

Answer 1

buying

to ask

Question 2

Try + -ing means that you are trying something as an experiment, especially as a possible solution to a problem, to see if it works or not.

Try + to + infinitive means that something is difficult but you are making an effort to do it.

I’m trying … Japanese but it’s very difficult.
Have you tried … the computer off and on again?

Answer 2

to learn

turning

Question 3

Remember + -ing and forget + -ing refer to having (or not having) a memory of something in the past.

Remember + to + infinitive and forget + to + infinitive refer to recalling (or not recalling) that there is something we need to do before we do it.

Please remember … some milk on the way home.
I remember … this film before.
I’ll never forget … you for the first time in this café.
He forgot… the door when he went out.

Answer 3

to buy
watching
meeting
to lock