1 if If you heat ice it melts

1 -ое правило: Союз if используется во всех типах условных предложений Нулевой тип If you heat ice, it melts Первый тип If you hear her singing, you will be impressed by her voice Второй тип If I were you, I would discuss this question with your boss Третий тип If you had warned me about the danger, I would not have participated in this competition Смешанный тип If I had eaten breakfast several hours ago, I would’t be hungry now

2 -ое правило: Союз whether используется: где есть альтернативы (or not или or) в начале предложения как часть подлежащего Whether the sun shines tomorrow or not, we will have a picnic. You must decide whether you should go or stay. Whether they will agree to sell the house is not known yet перед инфинитивом She doesn't know whether to get married now or wait после предлога We talked about whether we should buy a new car. после глаголов to discuss и We discussed (hesitated) whether to accept the to hesitate invitation

Whether the weather is fine Or whether the weather is not Whether the weather is cold Or whether the weather is hot We’ll weather the weather Whatever the weather Whether we like it or not.

Тест на контроль употребления союзов if и whether в английской речи 1. Fill in the gaps with if, whether/if. Вставьте в пропусках if, whether/if. whether Jack or Bill is a better player. 1. I don't know_____ 2. ____ we start off now, we’ll arrive there by dinner time. If 3. ____ Whether he’ll agree is another question. whether/if he can do it. 4. Ask him ______ whether/if I had met his sister. 5. He asked ______ whether/if it is true or not. 6. I don't know _____ 7 ____ Whether or no it is possible, I cannot say 8 I don't know _______ whether to tell him. whether to go by car or by train. 9. We had a long discussion about ____ whether/if Helen was coming or not. 10. I wondered _____ whether to lend money to him. 11. I don't know _____ 12. We discussed _____ to accept the invitation. whether 13. She hesitated _____ whether to act our interpreter. if 14. She would be happy _____she were invited to the party