Hogyan használjuk az "unless"-t

Az unless ugyanazt jelenti, mint az if...not. Az if-hez hasonlóan, az unless szót az egyszerű jelen vagy múlt követi, vagy a befejezett múlt idő (sosem a feltételes mód). Az unless szót az if...not helyett használjuk az összes fajta feltételes mondatban. A mellékmondatok sorrendje nem számít az olyan mondatokban, amelyekben az unless-t használjuk.

Feltételes mód I (type 1 conditional): Unless + egyszerű jelen (present tense)
If-el Megfelelő Unless-el
You will be sick if you don't stop eating. You'll be sick unless you stop eating.
I won't pay if you don't provide the goods immediately. I won't pay unless you provide the goods immediately.
If you don't study dilligently, you'll never understand trigonometry. Unless you study dilligently, you'll never understand trigonometry.
Feltételes mód II (type 2 conditional): Unless + egyszerű múlt (past tense)
If-el Megfelelő Unless-el
If he wasn't very ill, he would be at work. Unless he was very ill, he would be at work.
I wouldn't eat that food if I wasn't really hungry. I wouldn't eat that food unless I was really hungry.
She would be here by now if she wasn't stuck in traffic. She would be here by now unless she was stuck in traffic.
Feltételes mód III (type 3 conditional): Unless + befejezett múlt (past perfect)
If-el Megfelelő Unless-el
Our director would not have signed the contract if she hadn't had a lawyer present. Our director would not have signed the contract unless she had had a lawyer present.
I wouldn't have phoned him if you hadn't suggested it. I wouldn't have phoned him unless you'd suggested it.
They would have shot her if she hadn't given them the money. They would have shot her unless she'd given them the money.