Ответы
Ответ:
1. I will stay at home if it rains this afternoon.
2. If my brother goes abroad, I will be very worried
3. You won't earn money if you don't work more hours.
4. Melissa can to go out later if she doesn't finish her homework.
5. If I go to the supermarket later, I will buy some tomatoes.
6. Peter will get wet if he doesn't take his umbrella.
7. If I find the book you lent me, I will give it back to you.
8. They will be angry if we don't visit them next Saturday.
9. What will happen if you don't go to work tomorrow?
10. Many workers will lose their jobs if that factory closes down.
11. I won't buy a house if I don't get promoted at work.
12. If he doesn't finish the vegetables, he won't have a dessert.
13. My uncle can to go to the opera if he remembers to get the tickets.
Объяснение:
Это условные предложения первого типа. Обычно они строятся по формуле: if + present simple (то есть глагол во времени present simple) >> will + infinitive.
Но эти элементы не всегда следуют в таком порядке. Сначала может быть will + infinitive, а потом уже present simple. Такой порядок используется, если if (если) стоит не в начале предложения, а в середине.