Grammar, страница 43 - гдз по английскому языку 9 класс учебник Комарова, Ларионова

Unit 3. Crossing cultures. Language guide - страница 43.

Условие.

Grammar

Present perfect with for and since

◦ We use the present perfect with for when we mention the period or length of time of a situation.

I've been here for two weeks.

◦ We use the present perfect with since when we mention the point of time when a situation started.

I've spent every summer here since I was 13.

◦ We use How long ... ? with the present perfect to ask about the duration of an action or a situation.

How long have you been in England?

How long has your teacher taught at this school?

just, yet and already

◦ We use just in the affirmative to talk about something we have done a short time before the moment of speaking.

◦ It goes between the auxiliary verb and the main verb.

I've just spoken to my parents on the phone.

◦ We use yet to describe a period of time up to now.

◦ We use it in negative sentences to talk about something that hasn't been done up to the moment of speaking, and we use it in questions to ask if something has been done.

◦ Yet goes at the end of negative sentences and questions.

The lesson hasn't finished yet.

Have you done your homework yet?

◦ We use already in the affirmative to talk about something that we have done.

◦ It goes between the auxiliary verb and the main verb.

I've already been to London.

Present perfect and past simple

◦ We use the present perfect for situations when the time period is not finished.

I've lived here all my life.

◦ We use the past simple for completed actions in the past, when the time period is finished.

Last weekend we went on a day trip to London. ✓

Last weekend we have been on a day trip to London. ✖

Past perfect

affirmative
I / You / He / She / It / We / They	had	studied really hard.
negative
I / You / He / She / It / We / They	hadn't	bought the book.
questions
Had	I / you / he / she / it / we / they	used a computer before?
short answers
Yes,	I / you / he / she / it / we / they	had.
No,	I / you / he / she / it / we / they	hadn't.

◦ We use the past perfect for actions in the past which happened before another action.

2nd action:

Irma took the test a few days ago.

1st action:

She hadn't used a computer before.

◦ We form the past perfect with subject + had + past participle.

Danil had studied very hard to pass the exam.

Grammar bank → Workbook p103

Решение 2.

Решение 3.

Ты уже сделал домашнее задание?

Ответ: No, I haven't done it yet. / Нет, я еще не сделал его.