Infinitive and Gerund
Full infinitive
Bare infinitive
Gerund
When do we use full infinitive?
 To
express a purpose:
 We went to the countryside to see my uncle.
 After it + be + adjective
 It was rude of him to speak like that.
 After the first/second/last/best, etc
 You wont be the first to break the rules.
 After adjectives: afraid, surprised, free, happy,
ready, sorry...
 I am happy to hear that you have been
promoted.
 After too and enough
 It is too late to go now. She is experienced
enough to give advice.
 After
certain verbs: want, would like,
would love, hope, decide, manage, plan,
arrange, advise, choose, learn, offer,
promise, afford, agree, expect, seem,
forget, teach, need, try, tell, refuse,
remember, appear, tend,
 I would like to buy a hamburger.
 After the objects of certain verbs (advise,
allow, encourage, invite, order, persuade,
teach, tell, etc.)
 The minister advised him to leave as
soon as possible.
 After question words (how, what, when,
where, etc. but not why)
 I dont know how to play chess.
When do we use bare
infinitive?
After
modal verbs (can, could, will, would,
should, may, might, must)
 Can you pass me the salt, please?
After
the verbs let and make (in the
active voice).
 Please let me go. I have an important meeting.
After
would rather and had better
 He doesnt want to learn  hed rather stay at
home and play video games.
help
sb. (to) do sth.
 Can you help me find my glasses?
When do we use gerund (-ing
forms) ?
as a noun (subject or object of a verb)
 Collecting stamps is his favourite hobby.
after the verb go, indicating physical activities.
 Lets go fishing!
after certain verbs: like, love, hate, enjoy, prefer,
suggest, start, finish, continue, keep, stop, begin, avoid,
imagine, spend (time), risk, consider, etc.
 He enjoys making fun of his little brother.
after certain expressions : dont mind, cant stand, be
interested in, its worth, How/What about ?, I look
forward to, be good at, its no use, its no good, theres
no point (in), be used to, etc.
 She doesnt mind working long hours.
after prepositions
 You cannot go out without asking me first.
Verbs followed by full infinitive and ing form (change in meaning)
try
remember
forget
stop
REMEMBER/FORGET/REGRE
T:
+ INFINITIVE Future
+ -ing  Past
Examples:
 I remember going to dance classes when I
was a child. (I remember a past event)
 Remember to revise the questions before
sitting for the exam. (Do it)
 My grandmother forgot to lock the door
when she left the house. (She didnt lock the
door)
 I will never forget going to Bar Mano
concert years ago. (I cant forget that memory)
STOP:
+ ING  NO (dont do that anymore)
+ INFINITIVE  YES (do it, indeed)
Examples:
You have to stop eating after 09.00p.m.
After five hours of hard work we stopped
to have a rest. (We stopped work to have a
rest)
 TRY:
 +ING  experiment
 + INFINITIVE  make an effort
 Examples:
 I tried to open the door but I
couldnt.
 Why dont you try using this key?