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Modal Verbs
Andrea Torresi
Created on May 1, 2023
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Transcript
MODAL VERBS
ANDREA TORRESI
What are modal verbs?
When do we use modal verbs?
What are the rules for modal verbs?
1. SAME FORM FOR ALL PERSONS
Iyou he she must it we they
He musts
2. NO AUXILIARY VERB FOR NEGATIVE AND INTERROGATIVE FORMS
I should...
I shouldn't...
or... should I?
They don't can... Does she must?
3. MODAL VERBS ARE FOLLOWED BY INFINITIVE WITHOUT TO
I must to go now
EXCEPTIONS!!!!
4. THEY ONLY HAVE ONE TENSE: PRESENT OR PAST
PRESENT
PAST
INFINITIVE
PAST PARTICIPLE
am/is/are
was/were
been
to be
must
should
can
could
could
MODAL VERBS
MUST/HAVE TO obligation prohibition But... what is the difference???
meaning
Have to (tener que) Must (deber)
Have to is a normal verbMust is a modal verb
grammar
PRESENT
PAST
INFINITIVE
PAST PARTICIPLE
to have to
have/has to
had to
had to
must
use
Have to: external obligationsMust: personal obligations
MODAL VERBS
SHOULD/OUGHT TO advice criticism But... what is the difference???
MODAL VERBS
CAN/COULD ability permission But... what is the difference???
INFINITIVE
PRESENT
PAST
PAST PARTICIPLE
was/were able to
am/is/are able to
to be able to
been able to
can
could
could
Be able to is the verb to be, a normal verbCan/Could are modal verbs
To be continued...