The last time we saw her was on Easter day.

We haven’t  ____________________

1. I haven’t eaten this kind of food before.

This is ____________________

1. It started raining an hour ago.

‘It has ____________________

1. We haven’t visited my grandfather for two months.

The last time ____________________

1. I have studied English for ten years.

I began ____________________

1. My brother hasn’t seen his best friend for nearly three years.

It’s ____________________

1. When did you start learning Korea?

How long ____________________

1. We started living here two years ago.

We have ____________________

<Đáp án+Giải thích các bước giải:>

1/ We haven't seen her on Easter day

2/ This is the first time i have eat the food

3/ It has rained for an hour

4/ The last time we have visited my grandfather was two months ago

5/ I began study english three years brother saw his friends

7/ How long have you learned english?

8/ We have lived here for two years 

* Cấu trúc:

(+) S + has/have + Ved/V$_{3}$ +O

(-) S + has/have + not + Ved/V$_{3}$ 

(?) Has/have + S + Ved/V$_{3}$  + O

$\color{#88DCFF}{\text{#Byen.}}$

`1` We haven't seen her since Easter day

`->` S + have/has + ( not ) + V-II

`2` This is the first time I have eaten this kind of food

`->` This/It + is + the + first/second/.... + time + S + has/have + V-II

`3` It has been raining for an hour

`->` S + has/have + ( not ) + V-II

`4` The last time we visited my grandparents was two months ago

`->` The last time + S + V2/V-ed

`5` I began studying English ten years ago

`->` began/started + V-ing/to V

`6` It's nearly three years since my brother last saw his best friend

`->` It's nearly + ... years + since + S + V2/V-ed

`7` How long have you learnt Korea?

`->` How long + has/have + S + V-II?

`8` We have lived here for two years

`->` S + has/have + ( not ) + V-II