INFINITIVE
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What is an infinitive?

Definition:
An infinitive is the name of certain verb
forms that exist in many languages.
 In the usual description of English, the
infinitive of a verb is its basic form with or
without the particle ( to ): therefore, do
and to do, be and to be and so on are
infinitives.
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FORMS OF INFINITIVE
VERB
TO
+ VERB
TO + ADVERB + VERB
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KINDS OF INFINITIVE

BARE INFINITIVE

FULL INFINITIVE

SPLIT INFINITIVE ( CLEFT INFINITIVE)
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What is a bare infinitive?
Definition:
A bare infinitive verb is a
kind of verbs that is not
preceded by particle ( to).
speak, run, smoke………
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What is a full infinitive?
 Definition:
A full infinitive verb is a kind of verb
that is preceded by particle ( to).
to speak, to convine, to continue..
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What is a cleft infinitive?
 Definition:
A cleft infinitive verb is a verb
form with an element, usually an
adverb, interposed between
particle ( to ) and the verb form.
to strongly speak,………………
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HOW TO USE BARE INFINITIVE
1) Bare infinitive is used as the main
verb after the dummy auxiliary verb do,or
most modal auxiliary verbs ( will, can..).
2) Bare infinitive is used after several
verbs of perception ( see, watch, hear
and sense take a direct object and a
bare infinitive, where the bare infinitive
indicates an action taken by the main
verb’s direct object.
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I heard Cambodian prime minister speak
in the conference yesterday.
 I see a prisoner be beaten in Uganda.
 Sarah Palin watches her speech be
broadcast on CNN.
 Obama feels USA be transformed after
election campaign.

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3) Bare infinitive is used after several
verbs of permission or causation
including make, bid, let, and have.
She always make me cry.
4) Bare infinitive is used as present
subjunctive form and imperative form.
PAD always demands Thai prime
minister be punished.
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HOW TO USE FULL INFINITIVE
1)Full infinitive is used like a noun
phrase to be a subject of a verb.
To speak is very difficult.
2) Full infinitive is used like an adjective
or adverb, expressing purpose or intent.
He is the man to talk to.
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3) Full infinitive is used as an object of
a verb
She wants to speak English with me.
4) Full infinitive is used after the direct
object of many transitive verbs.
I asked her to make his case on his behalf.
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5) Full infinitive is used after an
intransitive verb, together with a
subject using the preposition ( for ).
I arranged for him to accompany me
or I waited for summer to arrive.
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HOW TO USE CLEFT INFINITIVE
 Cleft
infinitive is used to emphasize
subject.
He wants me to strongly cry.
Hillary wants Obama to strictly
reform the USA after election.
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What is an infinitive phrase?
Definition:
An infinitive phrase is composed of an
infinitive verb and any modifying adverbs
or prepositional phrase.
 The infinitive phrase has three functions
Noun
Adjective
Adverb.

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 My
duty as a coach is to teach skills.
 My
sister wanted a cat to love.
 Bill
is eager to work on his skating.
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