2 INFINITIVETo express purpose:She went to the bank to get money.
3 INFINITIVEAfter certain verbs: advise, agree, decide, hope, promise, refuse, seem, want etc.She decided to wait for a better offer.
4 INFINITIVEAfter verbs like know, decide, ask, learn, remember followed by WH- words:I can’t decide where to go on holiday.
5 INFINITIVEAfter adjectives like: sorry, happy, glad, afraid, ashamed etc.She was glad to be back.
6 INFINITIVE After too and enough: She is too sad to talk right now. She was frightened enough to keep silent.
7 -ING formAs a noun:Swimming is a pleasant activity.
8 -ING form After certain prepositions: with, without, of She left without saying a word.
9 -ING formAfter certain verbs: consider, avoid, deny, look forward to, involve, mention, risk, mind, regret, admit, suggest, imagine etc.They avoided speaking to each other all day long.
10 -ING formAfter go for activities:They went camping.
11 -ING formAfter: it’s no use, it’s (not) worth, it’s no good, be busy, there’s no point in, can’t help, can’t stand, be/get used to, have difficulty inI can’t stand waiting in a queue.
12 -ING form After: like, love, enjoy, hate, dislike, prefer etc She likes going for long walks.
13 INFINITIVE or -ING form? NO change in meaningbegin, start, continue, allow, permit, recommend, need, requireThey began to speak / speaking in a lower voice.They don’t allow parking / us to park here.
14 INFINITIVE or -ING form? b) With a change in meaninglike + infinitive = preferencelike+ -ing = enjoyI like to keep my room clean.I like swimming.
15 INFINITIVE or -ING form? stop + infinitive = cease an activity in order to do something elsestop + -ing = cease / interrupt an activityThey stopped to greet each other.They stopped laughing because they were too loud.
16 INFINITIVE or -ING form? try + infinitive =make an attempttry + -ing = try as a solutionI tried to speak louder, but I failed.I tried speaking English to him because he didn’t understand my language.
17 INFINITIVE or -ING form? remember + infinitive = remember to do an activityremember + -ing form = remember already performing an activityI must remember to water the plants.Ok, I now remember watering the plants.
18 INFINITIVE or -ING form? forget + infinitive = not doing an activityforget + -ing = activity is done and forgotten aboutI forgot to tell her to water the plants.I forgot telling her to water the plants, so I did it again.
19 INFINITIVE or -ING form? hear / see / watch / listen + -ing = witnessing a performing actionI heard him talking on the phone.hear / see / watch / listen + infinitive= witnessing the whole processI heard him talk on the phone.