Câu này có sai chổ has không em ? 

It has started raining for an hour

=>It..rained an hour ago.

  Hiện tại hoàn thành chuyển thành Quá khứ

It has started raining for an hour

=>It...has rained for an hour

has + ved: diễn tả hành động xảy ra trong quá khứ và vẫn diễn ra ở hiện tại

the last time we saw her was of Christmas day.->We haven’t seen her since Chrismas day

I haven’t eaten this kind of food before.->this is the first time I have eaten this kind of food

It started raining an hour ago.->It has been raining for an hour

We haven’t visited my grandfather for two months.-> We last visited my grandfather two months ago

i have studied English for three years.->I began studying English three years ago

My brother hasn’t seen his best friend for nearly five years.->the last time we saw his best friend was nearly five years ago

When did you start  learning English ?->How long have you learned English?

We started living here fifteen years ago.->We have lived here for fifteen years

The last time she visited me was five years ago.->She hasn’t visited me for five years

I last wrote to my uncle in july .->I haven’t written to my uncle since July

It’s long time since we became close friend .->We have become close friend for long time

Minh began to collect stamps in 2000 .->Minh has collected stamps since 2000

Viết lại câu sao cho nghĩa không đổi:

the last time we saw her was of Christmas day.

->We haven’t seen her since Chritmas day.

I haven’t eaten this kind of food before.

->this is the first time I have eaten this kind of food.

It started raining an hour ago.

->It has rained for an hour.

We haven’t visited my grandfather for two months.

-> We last visited my grandfather two months ago.

i have studied English for three years.

->I began studying English three years ago.

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

->the last time my brother saw his best friend was nearly five years ago.

When did you start  learning English ?

->How long have you learnt English?

We started living here fifteen years ago.

->We have lived here for fifteen years.

The last time she visited me was five years ago.

->She hasn’t visited me for five years.

I last wrote to my uncle in july .

->I haven’t written to my uncle since July.

It’s long time since we became close friend .

->We have become close friend for long time.

Minh began to collect stamps in 2000 .

->Minh has collected stamps since 2000.

Viết lại câu sao cho nghĩa không đổi:

the last time we saw her was of Christmas day.->We haven’t...seen her since Christmas day..................

I haven’t eaten this kind of food before.->this is......the first time I have eaten this kind of food....................

It started raining an hour ago.->It has.......rained for an hour......................

We haven’t visited my grandfather for two months.->.......The last time we visited my grandfather was two months ago...................

i have studied English for three years.->I began .....to study English three years ago..............

My brother hasn’t seen his best friend for nearly five years.->the last time.....my brother saw his best friend was nearly five years ago.........

When did you start  learning English ?->How long...have you learned English.............

We started living here fifteen years ago.->We have........lived here for fifteen years......................

The last time she visited me was five years ago.->She hasn’t.....visited me for five years............

I last wrote to my uncle in july .->I haven’t .....written to my uncle since July........................

It’s long time since we became close friend .->We have....become close friend for long time ....................

Minh began to collect stamps in 2000 .->Minh has......collected stamps since 2000......................

he has had his break fast since 7 o'clock

-he started having his breakfast at 7 o'clock

mr ba has talked to our teacher for an hour

-mr ba started talking to our teacher an hour ago

we started working here 2 years ago

-we has work here for 2 years

we began eating when it started to rain

-we have eaten since it started to rain

i last had my hair cut when i left her

-i haven't had hair cut since i left her

the last time she wrote to me was 5 months ago

-she hasn't written to me for 5 months

it is a long time since we last meet

-we haven't met for a long time

when did you have it?

-how long have you had it

this is the first time i have had such a delicious meal

- I have never had such a delicious meal before

i haven't seen him for 8 days

-the last time I saw him was 8 days ago

i haven't taken a bath since monday

-i last took a bath on Monday

hasn't finished

hasn't finished

6/8 rút gọn thành 3/4 => 6/8=3/4

9/12 rút gọn thành 3/4 => 9/12=3/4

15/20 rút gọn thành 3/4 => 15/20=3/4

3 phân số cần tìm là 6/8 ; 9/12 ; 15/20

nếu sai thì bảo mình nha chúc bạn học tốt

9/12 ; 15/20 rút gọn còn 3/4 nên 9/12;15/20=3/4

ai làm giúp mình đi minh k cho

4) Because of  the hard work \(,\)he earried a little money

5) It has rained heavily for an hour

It started raining an hour ago. Has it stopped raining?

II/Put the verbs in brackets into the correct form

It started(rain) raining an hour ago.Has it stopped(rain) raining yet?