1. употребите глаголы, данные в скобках, в past perfect и переведите пред¬ложения на язык: образец: if i (to have) time yesterday, i should have gone to the party. if i had had time yesterday, i should have gone to the party. - если бы у меня было время вчера, я бы пошел на вечер. 1) if i (to receive) your message, i should have come at once. 2) if he (to have) your address, he would have written to you. 2. употребите past indefinite (simple) после союза if, сделав соответствующие изменения в главном предложении. переведите предложения на язык: образец: if john comes, he will help us. if john came, he would help us. - если бы джон пришел, он бы нам. 1) if i don't have to study, i shall go to the movie with you. 2) if you turn out the lights, we shall be in the dark. 3. употребите past perfect после союза if, сделав соответствующие изменения в главном предложении. переведите предложения на язык: образец: if john comes, he will help us. if john had come then, he would have helped us. 1) if i have no time this week, i shall not be able to join your ex¬cursion. 2) if she sits in the sun too long, she will get sick.