American Dictionary

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Definition be to do something in American English

be to do something phrase

phrase
1

used for telling someone what to do

Example

You are to stay here until I send for you.

2

used for saying what has been arranged

Example

The ceremony is to take place on the U.S.S. Missouri.

3

used for saying or asking what should be done

Example

What are we to do?

Example

You are to be congratulated on your wise decision.

4

used in an "if" clause for suggesting a possible goal when you are saying what must happen in order to achieve it

Example

If we are to compete successfully in world markets, we must invest more money in education and training.

5

used about someone or something in the past to say what would happen at a later time

Example

the person who was to become President

6

used in the past forms in an "if" clause for describing a situation that does not exist and is not likely to exist: were is considered more correct than was with all subjects in this type of "if" clause

Example

If your son were to die before you, the property would be divided among your grandchildren.

Definition be to do something in American English