Раскрывая скобки, напишете каждое предложение три раза, построив условные предложения i, ii и iii типов. образец: if you (to be) free, i (to come) to see you. if you are free, i will come to see you. if you were free, i would come to see you. if you had been free, i would have come to see you. 1) if you (to be) busy, i (to leave) you alone. 2) if i (not to be) busy, i (to go) to the concert. 3) if i (to get) a ticket, i (to go) to the concert. 4) if i (to live) near a wood, i (to gather) a lot of mushrooms. 5) if my father (to return) early, we (to watch) tv together.

1) If you  are busy, I  I will  leave you alone.
If you  were busy, I  I would  leave you alone.
If you  had been busy, I  I would have  leave you alone
2) If I am not busy I will go  to the concert., 
If I wasn't busy,I would  go  to the concert. 
If I had not been busy, I would have gone to the concert.
3) If I  get a ticket, I will go to the concert. 
If I  got a ticket, I would go to the concert. 
If I had got a ticket, I would have gone  to the concert. 
4) If I live near a wood, I will gather a lot of mushrooms.
If I lived near a wood, I would gather a lot of mushrooms.
If I had lived near a wood, I would have gatherd a lot of mushrooms.
5) If my father returns early, we will watch TV together
 If my father returned early, we would watch TV together
. If my father had returned early, we would have watch TV together