We need to take the first train in the morning. __________, we'll be late.
Otherwise
__________ Mum heard you say that! She'd be really angry!
Suppose
You can borrow my book __________ you give it back to me tomorrow.
as long as / provided
Dad said I can't go on the school trip to Russia __________ I buy some travel insurance.
unless
You can go there without a visa __________ you don't stay more than three months.
provided / as long as
If you didn't live here, where would you like to live?
Suppose you didn't live here, where would you like to live?
The teacher said I wouldn't do well if I didn't do my homework.
The teacher said I wouldn't do well unless I did my homework. / The teacher said I would do well as long as / provided I did my homework.
OK, you can use my phone if you don't make long-distance calls.
OK, you can use my phone, as long as / provided you don't make long-distance calls.
I have to go. If I don't, I'll miss the bus.
I have to go, otherwise I'll miss the bus.
Mum says we can go if we promise to be back in time for dinner.
Mum says we can go, as long as / provided we promise to be back in time for dinner.
