Unless he takes more care, he'll have an accident.
Unless it rains soon, the crops will be ruined.
If the weather isn't fine, we'll stay at home.
If I don't get my work finished, I can’t go with you.
Unless you leave on the `color{purple}{15^(th)}`, you will get home late for your mother’s party.
Cấu trúc Unless(If not) trog First Conditional:
Unless + S + V (inf/s/es), S + will/can/shall + V./
If + S + don't/doesn't, S + will/can/shall + V.