Раскрывая скобки, напишите каждое предложение три раза, образуя условные предложения I, II, и III типов. E.g. If you (to be) free, I (to come) to see you. - If you are free, I shall come to see you. If you were free, I should come to see you. If you had been free, I should have come to see you. 1. If I (to be not busy), I (to go) to the concert. 2. If no one (to come) to help, we (to be obliged) to do the work our-selves. 3. If you (to put) on your glasses, you (to see) better 4. What we (to do) if they (to be) late? 5. you (to be angry) very if we don't come? 6. he (to be displeased) if don't ring him up? 7. They all (to be surprised) if I (to make) such a mistake. 8. If he (to do) not come in time, we (have) to wait for him. 9. Mother asked me: "Did you play with your friend yesterday?" 10. "Why don't you play with your friends, Kate?” said her mother.

If I am not busy, I shall go to the concert.
If I were not busy, I should go to the concert.
If I had not been busy, I should have gone to the concert.

If no one comes to help, we shall be obliged to do the work ourselves.
If no one came to help, we should be obliged to do the work ourselves.
If no one had come to help, we should have been obliged to do the work ourselves.

If you put on your glasses, you will see better.
If you put on your glasses, you would see better.
If you had put on your glasses, you would have seen better.

What will we do if they are late?
What would we do if they were late?
What would we have done if they had been late?

Will you be very angry if we don’t come?
Would you be very angry if we didn’t come?
Would you have been very angry if we hadn’t come?

Will he be displeased if we don’t ring him up?
Would he be displeased if we didn’t ring him up?
Would he have been displeased if we hadn’t rung him up?

They will all be surprised if I make such a mistake.
They would all be surprised if I made such a mistake.
They would have been surprised if I had made such a mistake.

If he does not come in time, we shall have to wait for him.
If he did not come in time, we should have to wait for him.
If he had not come in time, we should have had to wait for him.

Mother asked me if I had played with my friend yesterday.
Mother asked me if I played with my friend yesterday.
Mother asked me if I had played with my friend yesterday.

“Why don’t you play with your friends, Kate?” said her mother.
“Why didn’t you play with your friends, Kate?” said her mother.
“Why hadn’t you played with your friends, Kate?” said her mother.