islcollective worksheets elementary a1 preintermediate a2 intermediate b1 adults students with special educational needs 1210455762544b9fdb375d02 11963395
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PRESENT
af fir mative
ne gative
inter r ogative
I have to study.
I don’t have to do it.
Do I have to swim?
You have to read a book.
You don’t have to call her.
Do you have to study?
He has to finish it.
PAST
af fir mative
ne gative
inter rogative
FUTURE affirmative
negative
interrogative
Even Martians
have to learn how to use
computers. A Martian has
to know earth language
too.
Have
to : to
It =isit necessar
Has to/have
is necessaryy
IDon’t/doesn’t
don’t havehave
to: to
It’s
not
= It’s
not necessary
