Be +
infinitive
Be can be followed by a to-infinitive. This structure is used to talk about plans
and arrangements.
·
I am to
meet him tomorrow.
·
He is to arrive soon.
·
They are to get married next month.
Be + infinitive can also
be used to give commands or orders.
·
You are to
finish your homework before
you go to bed.
·
You are to sit in that corner and keep quiet.
·
You are not to
misbehave with the servants.
Be +
perfect infinitive
A perfect infinitive (to have + past participle) can be used
after be to show that a planned event did
not happen.
·
They were to
have been married last month,
but had to postpone the marriage.
Be +
passive infinitive
Be+ passive infinitive (to be +
past participle) is often used in notices and instructions.
·
This medicine is
to be taken twice daily.
·
The sticker on this bottle is
not to be removed.
·
This book is not to be resold.
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