Použitie slova "Unless"

Unless znamená to isté, ako if...not. Podobne ako if, za unless sa umiesťnuje prítomný čas alebo predminulý čas (nikdy nie v podmienkovom tvare). Unless sa používa namiesto if...not podmienkových vetách všetkých typov. Na poradí viet, ktoré používajú unless, nezáleží.

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Prvá podmienková veta: Unless + prítomný čas

S If	Ekvivalent Unless
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.

Druhá podmienková veta: Unless + minulý čas

S If	Ekvivalent Unless
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.

Tretia podmienková veta: Unless + predminulý čas

S If	Ekvivalent Unless
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.