student asking question

What's the grammar of "is to"?

teacher

Native speaker’s answer

Rebecca

"be to + infinitive form of the verb" refers to the various meanings of "~ is going to", "~ have to", "~ can do". In this fragment, the phrase means "be expected to". You can understand its meaning depending on the context of where it's used. Ex: I'm to be awarded at the ceremony. Ex: She is to submit the assignments by tonight. Ex: We are to beat others on the game. Ex: This room is to rent.

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