Present perfect usage:
1. When we talk about life experience up to the present
2. When we talk about sth that happened in the past but result is important at the time of speaking
3. Recently completed action
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Колонка:) Past participle(третья).
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Task 2
Ann has washed her hair.
Tom has lost weight
It has run out petroleum
He has broken his leg
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Task4
This is the first time he has driven a car
Have you ever eaten caviar?
Jill hasn’t written to me nearly for a month
Has it stopped raining yet?
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Task 5
1.b
2 a
3 a
4 a
5 B
2. if I have a lot of friends
3. I will get into university
4. we don`t buy tickets (якщо я правильно зрозуміла, і це означає "полетіти на літаку кудись")
5. I`ll buy lots of sweets
6. you don`t study harder
7. he doesn`t wake up on time