one must + infinitive / it's necessary to
'hay que' is impersonal (no specific subject). Followed by infinitive.
You have to arrive early to get a good spot.
—What do you think? —We have to be realistic about the budget.
The contract needs to be reviewed before signing it.
You have to arrive early to get a good spot.
—What do you think? —We have to be realistic about the budget.
The contract needs to be reviewed before signing it.