Verb + -ing (gerund)

These verbs are always followed by -ing, never to + infinitive:

enjoymindsuggest stopfinishavoid consideradmitdeny missrecommendrisk quitpostponekeep on give upput off
VerbExample
enjoyI enjoy reading in the evenings. (✗ enjoy to read)
mindWould you mind closing the door?
suggestShe suggested going to the movies.
avoidHe tried to avoid answering my question.
finishI'll call you when I've finished cleaning.
keep on / keepYou keep interrupting when I'm talking!
give upPaula has given up trying to lose weight.

Verb + to + infinitive

These verbs are followed by to + infinitive:

decidewanthope agreeofferpromise refusemanageafford failforgetlearn planarrangeseem appeartend
VerbExample
decideWe decided to take a taxi home.
agreeDavid agreed to help me.
manageWe managed to get to the airport on time.
affordThey can't afford to eat out very often.
refuseShe refused to tell me her name.
promiseI promised not to be late.
seem / appear / tendHe seems to have plenty of money.

Verbs that take both — with a meaning change

Verb+ -ing+ to
stop He stopped smoking.
(he no longer smokes)
He stopped to smoke.
(he paused in order to smoke)
remember I remember seeing her.
(I have a memory of it)
Remember to call him.
(don't forget to do it)
try Try adding some lemon.
(experiment — see if it helps)
She tried to open the door.
(attempt — it may not work)
forget I'll never forget meeting you.
(memory of a past event)
Don't forget to lock the door.
(task you must do)

Exercises

Verb + -ing or verb + to?

1. When I'm tired, I enjoy ___ (watch) television.

2. It was a nice day, so we decided ___ (go) for a walk.

3. There was a lot of traffic, but we managed ___ (get) to the airport on time.

4. I'm not in a hurry. I don't mind ___ (wait).

5. Sam ___ (suggest) going to the movies. Which sentence is correct?

6. He stopped ___. (= He no longer smokes.)