#81 be allowed / supposed / able / to infinitive verb

FORM

be allowed / supposed / able / to infinitive verb

USE

Can use a limited range of expressions with 'be' + infinitive ('be allowed to', 'be supposed to', 'be able to') with present and past forms of 'be' and with modal 'will'.

EXAMPLE

I’m not allowed to watch TV on school nights.

Where is Jane? She was supposed to be here by now.

I have so much homework, I am not able to meet you tonight.