1.He (not go) to university unless he (work) hard.2.They (wait) until

желая бы первое предложение во втором типе

He won't go to university unless he works hard
They will wait until he comes back.
She won't go to the park if it rains.
I'll give you the book if I find it.
You will have to take the taxi if you miss the bus.(First Conditional)
1-ое и 2-ое предложения употребляют только в первом типе.
She would not go to the park if it rained
I would give you the book if I found it.
You would have to take the taxi if you missed the bus.( Second Conditional)
She would not have gone to the park if it had rained
I would have given the book if I had found it ( Third Conditional)