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1 to tidy => tidying
2 isn't used to => doesn't use
3 at => for
4 since => when
5 sang => is singing
6 are => is
7 it => bỏ
8 interestingly => interesting
9 not go => didn't go
10 hardly => hard
IV. Tìm lỗi sai và sửa lại: 1. Huong spent half an hour to tidy => tidying (spend + V-ing) the bathroom. 2. Peter isn’t used => didn't use to eat with chopsticks when he lives in Viet Nam. 3. I don’t know where my pen is. I’ve looked at => for it everywhere. 4. We last saw a cowboy movie since => when we were in the city. 5. The man sang => singing English songs beautifully is my elder brother. 6. Five dollars are => is too much for this cake. 7. The story wasn’t short enough for me to read it => read in one day. 8. She finds it interestingly => interesting to do the housework. 9. I would rather you not => didn't go to school by motorbike. 10. These people are working very hardly => hard on the farm.
1, We haven't seen her since Christams
2, This is the first time I have tried this kind of food
3, It has rained for an hour ago
4, The last time we visited my grandparents was two years ago
5, I began studying three years old
6, It 's nearly 5 years since my brother saw his best friend
7, How long have you started learning EL ?
8, Jane is the same height as her older sister
Học tốt nha bạn 
Ex19: Write the second sentence so that it has a similar meaning to the first :
1. The last time we saw her was on Christmas Day.
We haven't SEEN HER SINCE CHRISTMAS.
2. I haven't eaten this kind of food before.
This is THE FIRST TIME I HAVE TRIED THIS KIND OF FOOD.
3. It started raining an hour ago.
It has RAINED FOR AN HOUR.
4. We haven't visited my grandparents for two months.
The last time WE VISITED MY GRANDPARENTS WAS TWO MONTHS AGO.
5. I have studied English for three years.
I began STUDYING ENGLISH THREE YEARS AGO.
6. My brother hasn't seen his best friend for nearly five years.
It's NEARLY FIVE YEARS SINCE MY BROTHER LAST SAW HIS BEST FRIEND.
7. When did you start learning English?
How long DID YOU START LEARNING ENGLISH?
8. Jane is as tall as her older sister.
Jane is the same HEIGHT AS HER OLDER SISTER.
Viết lại câu sao cho nghĩa không đổi:
1. The last time we saw her was of Christmas day.
=> We haven’t seen her since Chritmas day.
2. I haven’t eaten this kind of food before.
=> This is the first time I have eaten this kind of food.
3. It started raining an hour ago.
=> It has rained for an hour.
4. We haven’t visited my grandfather for two months.
=> The last time we visited my grandparents was two months ago.
5. i have studied English for three years.
=> I began studying English three years ago.
6. My brother hasn’t seen his best friend for nearly five years.
=> It's nearly 5 years since my brother didn't see his best friend
1)We started learning English 10 years ago.
2)The last time we met was a long time ago.
3)The last time Mrs.Ann took part in many voluntary programs was 4 years ago.
4)The last time i met my family was (the) last Christmas.
Câu 5 và 6 mình chịu
7)The doctor quitted his job in the local hospital and moved to the central hospital two days ago.
8)The last time the children had a long vacation was last year.
9)The last time they visited their parents was 3 months ago.
10)We broke up 2 years ago.
The Titanic ( cross) was crossing the Atlantic when it ( strike ) struck an iceberg
Please turn off the stove . The water ( boil ) boils for more than fifteen minutes.
Mary ( work ) is working on the essay for two hours now and she ( hope) hopes that she ( finish) will finish it in one more hour.
The guard ( listen) listened to his iPod, so he ( not / hear) didn't hear the fire alarm
when thư boss ( walk) walked into the office, his secretary ( type) was typing the report , and the accountant ( talk) was talking on the phone
The Titanic ( cross) ..was crossing.. the Atlantic when it ( strike ) .striked.... an iceberg
Please turn off the stove . The water ( boil ) ..boils... for more than fifteen minutes.
Mary ( work ) .is working.. on the essay for two hours now and she ( hope) .hopes... that she ( finish) .will finish.. it in one more hour.
The guard ( listen) ...listens... to his iPod, so he ( not / hear) ..doesn't hear... the fire alarm
when thư boss ( walk) ...walked. into the office, his secretary ( type) .was typing. the report , and the accountant ( talk) ..was talking.. on the phone
1. They were said to has lived here for a long time
->They were said to have lived here for a long time
2. My mother has to cooking dinner herself
->My mother has to cook dinner herself
3. She has lived here since years
-> She has lived here for years
4. We are afraid in dog
-> We are afraid of dog
Complete the second so that it has similar meaning to the first sentence:
1.Tom started recycling rubbish two years ago
Tom has....................recycled rubbish for two years......................
2.We have donated books and clothes for ten years
We began.................donating books and clothes ten years ago................
3.The last time we saw her was on Christmas Day.
We haven't................ seen her since Christmas Day................
4.I haven't eaten this kind of food before.
This is..........the first time I have eaten this kind of food........................
5.It started raiing an hour ago
It has........rained for an hour..................
Complete the second sentence so that it has similar meaning to the first sentence
1.Tom started recycling rubbish two year ago.
Tom has recycled rubbish for two year
2.We have donated books and clothes for ten years.
We began donating books and clothes ten years ago
3.The last time we saw her was on Christmas Day.
We haven't sên her since Christmas Day.
4.I haven't eaten this kind of food here.
This is the first time I have eaten this kind of food here
5.It started raining an hour ago.
It has rained for an hour
6.I have studied English for 5 years.
I began studying English 5 years ago
7.I last saw him when I was a student.
I haven't seen him since I was a student.
8.I haven't talked to him for 8 days.
The last time I talked to him was 8 days ago
1 planned => been planning
2 were => had been
zúp em
Dave has planned his holiday since Christmas.
-> Dave has been planning his holiday since Christmas.
we were sleeping for an hour when the phone rang
-> we had been sleeping for an hour when the phone rang