2 Circle the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.
(Khoanh tròn chữ cái A, B, C hoặc D để chỉ ra phần gạch chân cần sửa trong mỗi câu hỏi sau.)
1. This is the first time I had taken a photo of this rare animal in the wild.
2. The most we use our personal vehicles, the more we pollute the environment.
3. What is the most expensive present that you have ever give to someone?
4. That is the second time I have went to the new shopping centre.
5. Much and more high-rise buildings are being built in our city.
6. Finding a stable job in the city is getting more and most difficult.
7. The little developed a country is, the higher the unemployment rate is
8. Singapore is the most modern city I had ever visited.

1. C
Lỗi sai: had taken => have taken
Giải thích: Dấu hiệu nhận biết thì hiện tại hoàn thành “this is the first time” (đây là lần thứ nhất) => Cấu trúc thì hiện tại hoàn thành chủ ngữ số nhiều: S + have V3/ed.
Câu hoàn chỉnh: This is the first time I have taken a photo of this rare animal in the wild.
(Đây là lần đầu tiên tôi chụp ảnh loài động vật quý hiếm này trong tự nhiên.)
Chọn C
2. A
Lỗi sai: most => more
Giải thích: Cấu trúc so sánh đồng tiến (càng…càng): so sánh hơn + S + V, so sánh hơn + S + V.
Câu hoàn chỉnh: The more we use our personal vehicles, the more we pollute the environment.
(Càng sử dụng phương tiện cá nhân nhiều thì chúng ta càng gây ô nhiễm môi trường.)
Chọn A
3. D
Lỗi sai: give => given
Giải thích: Dấu hiệu nhận biết thì hiện tại hoàn thành “ever” (từng) => Cấu trúc thì hiện tại hoàn thành chủ ngữ số nhiều dạng câu hỏi: have + S + ever + V3/ed?
Câu hoàn chỉnh: What is the most expensive present that you have ever given to someone?
(Món quà đắt nhất mà bạn từng tặng cho ai đó là gì?)
Chọn D
4. C
Lỗi sai: went => gone
Giải thích: Dấu hiệu nhận biết thì hiện tại hoàn thành “this is the second time” (đây là lần thứ hai) => Cấu trúc thì hiện tại hoàn thành chủ ngữ số nhiều: S + have V3/ed.
Câu hoàn chỉnh: That is the second time I have gone to the new shopping centre.
(Đó là lần thứ hai tôi đến trung tâm mua sắm mới.)
Chọn C
5. A
Lỗi sai: much => more
Giải thích: Cấu trúc so sánh lũy tiến (càng ngày càng) với danh từ: more and more + danh từ.
Câu hoàn chỉnh: More and more high-rise buildings are being built in our city.
(Ngày càng có nhiều tòa nhà cao tầng được xây dựng ở thành phố của chúng ta.)
Chọn A
6. D
Lỗi sai: most => more
Giải thích: Cấu trúc so sánh lũy tiến (càng ngày càng) với tính từ dài: more and more + tính từ dài.
Câu hoàn chỉnh: Finding a stable job in the city is getting more and more difficult.
(Tìm một công việc ổn định ở thành phố ngày càng khó khăn hơn.)
Chọn D
7. A
Lỗi sai: little => less
Giải thích:
- Cấu trúc so sánh đồng tiến (càng…càng): so sánh hơn + S + V, so sánh hơn + S + V.
- “little” có dạng so sánh hơn là “less” (ít hơn)
Câu hoàn chỉnh: The less developed a country is, the higher the unemployment rate is.
(Nước càng kém phát triển thì tỷ lệ thất nghiệp càng cao)
Chọn A
8. C
Lỗi sai: had => have
Giải thích: Giải thích: Dấu hiệu nhận biết thì hiện tại hoàn thành “ever” (từng) => Cấu trúc thì hiện tại hoàn thành chủ ngữ số nhiều: S + have + ever + V3/ed?
Câu hoàn chỉnh: Singapore is the most modern city I have ever visited.
(Singapore là thành phố hiện đại nhất mà tôi từng đến thăm.)
Chọn C

Các bài tập cùng chuyên đề
Bài 1 :
Choose the best answer.
He __________ her before.
has never met
never has met
have never met
never have met
Bài 2 :
Choose the best answer.
She ___________ book for more than 2 hours.
read
is reading
has read
reads
Bài 3 :
Choose the best answer.
__________ married yet?
Did you get
Have you got
Do you get
Are you getting
Bài 4 :
Choose the best answer.
Peter ________(not/see) his friend since last Christmas.
doesn’t see
didn’t see
isn’t seeing
hasn’t seen
Bài 5 :
Choose the best answer.
We __________ this movie.
already watch
have watched already
have already watched
already have watched
Bài 6 :
Choose the best answer.
He _________ here for a long time.
has not come
isn’t coming
didn’t come
doesn’t come
Bài 7 :
Choose the best answer.
You _________ your project yet, I suppose.
done
do
aren't doing
haven't done
Bài 8 :
Choose the best answer.
He _________ that there are only four weeks to the end of term.
is just realizing
has just realized
just realizes
realizes just
Bài 9 :
Choose the best answer.
Tenda _________ here all his life.
has lived
lives
is living
lived
Bài 10 :
Choose the best answer.
They _________ their house since they arrived last Monday.
didn’t clean
cleaned yet
haven’t cleaned
is not cleaning
Bài 11 :
Choose the best answer.
She_________ to London a couple of times.
has already traveled
has traveled already
already travels
is already travelling
Bài 12 :
Choose the best answer.
The bill isn’t right. They _______ a mistake.
will make
are making
made
have made
Bài 13 :
Choose the best answer.
My mother ________ to start working next week.
has decided just
has just decided
just decides
decided just
Bài 14 :
Choose the best answer.
________ money for your mother?
Do you just pay
Did you just pay
Have you just paid
Are you just paying
Bài 15 :
Choose the best answer.
It is the second time he _______ his job.
has lost
lost
loses
has been losing
Bài 16 :
Choose a suitable word or phrase to fill in each blank.
The cutting or replacement of trees downtown _____ arguments recently.
has caused
have caused
are causing
caused
Bài 17 :
Choose the suitable verb tenses.
Bài 18 :
Choose the suitable verb tenses.
Bài 19 :
Choose the suitable verb tenses.
Bài 20 :
Choose the suitable verb tenses.
Bài 21 :
Choose the suitable verb tenses.
Bài 22 :
Choose the suitable verb tenses.
Bài 23 :
Choose the suitable verb tenses.
Bài 24 :
Choose the suitable verb tenses.
Bài 25 :
Choose the best answer
There _______________ a lot of changes in Vietnam since the 1990s.
was
have been
has been
are
Bài 26 :
Choose the best answer
It _______________ him almost 1 hour to go to school by bus every day.
takes
took
has taking
is taking
Bài 27 :
Choose the best answer
Her hometown _______________ a lot of hills and mountains.
has
gets
is
has got
Bài 28 :
Choose the best answer
My dog _______________ my cat since I came home.
is chasing
has chased
chased
chases
Bài 29 :
Choose the best answer.
I fell asleep while I _______________ my homework last night.
was doing
have done
did
is doing
Bài 30 :
Give the brackets with suitable verb tenses.