1. Когда говорим о прошедших действиях и хотим подчеркнуть их важность в настоящем, а не время, когда они произошли. Например: The garden is clean. We`ve raked the leaves. I`ve won the prize at the tennis competitions.

2. Когда мы говорим о действии, которое произошло, а период времени еще не закончился (today, this week, this year) Например: I`ve drawn a picture today.

3. Когда мы подчеркиваем, как долго протекало действие. 1) Если мы хотим сказать, с какого времени началось действие, мы используем since: He has played tennis since he was 5. 2) Если мы хотим сказать, как долго продолжалось действие, мы используем for: I have played tennis for two hours today.

4. С наречиями времени already (когда мы хотим сказать, что действие уже завершено), just (если мы хотим сказать, что действие только что завершилось) и yet в вопросительных и отрицательных предложениях: I have already done my homework. He has just finished his homework. Have you done your homework yet? I haven`t done it yet.

1. We … graffiti from all the houses in our street. (wash off/ just) We have washed off graffiti from all the houses in our street My Dad is happy. I.... to rake the leaves in the garden. (help) My Dad is happy. I have helped to rake the leaves in the garden I … five excellent marks at school …. (get/today/just) I have just got five excellent marks at school. 4. I can go to cinema now. I … the poem. (learn/already/yet) I can go to cinema now. I havent learnt the poem yet My brother … tennis … 2 o`clock. (play/since/for) My brother has played tennis since 2 o`clock I … the violin … two hours. (play/since/for) I have played the violin for two hours. 3