Здравствуйте с этим разобраться Упражнение № 2. Раскройте скобки, употребив глагол в Present Perfect или в Past Simple Tense.
1) My friend (to come) back from business trip yesterday. Our teacher (to ask) me twice today.
2) The plane just (to land). He (to give) me his notes last week.
3) She (to send) three letters to this firm already. They (to do) the exercises quickly yesterday.
4) The workers (to go) to the meeting already. He (to ask) many questions last lesson.
5) I (to speak) with my boss already. They (to go) to the seaside by train last summer.

1) come

asked

2)landed

gave

3) sent

did

4) gone

asked

5) spoken

went

1) My friend came back from business trip yesterday. Our teacher has asked me twice today.

2) The plane has just landed. He gave me his notes last week.

3) She has sent three letters to this firm already. They did the exercises quickly yesterday.

4) The workers have gone to the meeting already. He asked many questions last lesson.

5) I have spoken with my boss already. They went to the seaside by train last summer.

Объяснение:

Past Simple Tense:

1) Действие закончилось в

2) Есть указатель времени в вчера, на неделе летом, в 2001 году и т.п.

Present Perfect:

1) Когда произошло действие неважно, важен результат: самолет приземлился, письма отправили, работники уже ушли.  

2) Отрезок времени не указан или еще не закончился: сегодня (сегодня еще не закончилось), на этой неделе (эта неделя еще продолжается), в этом году (этот год все еще продолжается) и т.п.