CHUYÊN ĐỀ 8
COMPARISON
* PHẦN I: LÝ THUYẾT
Adj: - long adj / short adj
Adv: - long adv / short adv
Note:
- Nếu dùng động từ To be hoặc V nối thì trong câu sẽ dùng so sánh với tính từ, còn nếu dùng V
thường thì trong câu sẽ dùng so sánh với trạng từ.
- Nếu động từ trước và sau “than/as” giống nhau thì động từ sau “than/as” ta có thể thay thế bằng
trợ động từ, hoặc ta có thể bỏ động từ sau “than/as”
I earn less than he does. (less than he earns).
I swim better than he does/better than him.
- Trong văn nói hoặc tiếng anh không trang trọng có thể bỏ động từ sau “than/as”, và có thể dùng
đại từ tân ngữ
He has more time than I have.
He has more time than I.
He has more time than me.
- So sánh ngang bằng và so sánh hơn chỉ dùng khi so sánh giữa 2 người hoặc 2 vật, còn khi so
sánh từ 3 người hoặc 3 vật trở lên ta dùng so sánh hơn nhất.
A. So sánh ngang bằng (Equal Comparison)
1. S + “be/Vnối” + as + adj + as + N (Pronoun) + (Verb)
Ex.

- Peter is as tall as his father.
- Mary is as beautiful as her friend.
2. S + V thường + as + adv + as + N (Pronoun) + (Verb)

Ex.

- Jane sings as well as his sister.

Note:
- Sau “as” thứ hai nhất thiết phải là đại từ nhân xưng chủ ngữ (được dùng tân ngữ nhưng chủ yếu
trong văn nói.)
- Nếu là câu phủ định (so sánh không bằng), “as” thứ nhất có thể thay bằng “so”
Ex: His work is not so difficult as mine
- Danh từ cũng có thể dùng so sánh trong trường hợp này nhưng đảm bảo danh từ đó phải có tính từ
tương ứng.
Chú ý các tính từ sau và các danh từ tương ứng của chúng.
Adj

N

- heavy, light

→

weight

- wide, narrow

→

width

- deep, shallow

→

depth



- long, short

→

length

- big, small

→

size

- old

→

age

- Danh từ cũng được dùng để so sánh, nhưng trước khi so sánh thì cần xác định danh từ đó là đếm
được hay là không đếm được và sử dụng công thức so sánh sau:
N đếm được: Ex: book, pen, table.......
N không đếm được: money. water, salt......
many/ few
S + V + as

+

N đếm được số nhiều
+


much/little

+ as + noun/pronoun
N không đếm được

Ex: David earns as much money as his wife
*

Ý “bằng nhau, như nhau” có thể được diễn đạt cách khác:
S+ V + the same + (N) + as + N (pronoun).
Ex. - My house is as high as his.

→ My house is the same height as his.
-Tom is as old as Mary.

→ Tom and Mary are the same age.
Note:
-Đối nghĩa của the same..... as là difference ............ from
Ex: My teacher is different from yours.
-Chúng ta dùng “ the same as” chứ không dùng “ the same like”
B. So sánh hơn. (Comparative)
1. So sánh hơn (Comparative)
S + be/ Vnối

short Adj +er

+ than

+ N (pronoun)


more + long Adj

Ex. -Today is hotter than yesterday.
-This chair is more comfortable than the other.
S+V +

short Adv +er

+ than

+ N (pronoun)

more + long Adv
Ex.

- He speaks English better than me.
- My father sings more beautifully than my brother.

* Để nhấn mạnh so sánh, có thể thêm much/far trước so sánh, công thức:


S + V + far/much + Adj/Adv +er + than + noun/pronoun
S + V + far/much + more + Adj/Adv + than + noun/pronoun
Eg: Harry’s watch is far more expensive than mine
He speaks English much more rapidly than he does Spanish.
Note:
- Adj ngắn 1 âm tiết + er/ est:
Ex. Thick → thicker / thickest, cold → colder/ coldest ….
+ Với những tính từ 1 âm tiết có câu tạo: phụ âm + nguyên âm + phụ âm thì ta gấp đôi phụ âm cuối

rồi thêm er/ est:
Ex. Hot → hotter/ hottest, big → bigger// biggest
+ Với những tính từ tận cùng là nguyên âm + y ta giữ nguyên và thêm er / est
Ex: gay → gayer / gayest
gray → grayer / grayset
+ Với những tính từ 2 âm tiết có tận cùng là đuôi: –y, -er, -ow,-le: thì ta thêm đuôi er / est:

→

Dirtier

simple

→

simpler

clever

→

cleverer

narrow

→ narrower

Ex. dirty

+ Với những tính từ tận cùng là phụ âm + y, ta đổi y = i + er /est

Eg: happy → happier
easy

→ easier

+ Còn lại những tính từ 2 âm tiết khác ta thêm more đằng trước tính từ.
- Với những tính từ 3 âm tiết trở lên ta thêm more đằng trước:
beautiful → more beautiful

Ex.

interesting→

intelligent → more intelligent

more interesting

C. So sánh nhất (Superlative)
So sánh nhất bắt buộc phải có từ 3 đối tượng trở lên. (thường là N tập hợp)
S + V + the +

short adj/ adv +est

+(N)+ (in/ of) + N

most + long adj/ adv
Ex: Lan is the most beautiful in my class
Note:
-Dùng in với danh từ số ít. Dùng of với danh từ số nhiều



Ex. This dress is the most beautiful of the dresses.
-Các quy tắc khác cũng giống như dạng so sánh hơn.
Ex. Hottest, biggest
Ex. John is the tallest boy in my class.
-Các trường hợp adj/ adv biến đổi đặc biệt.
+Một số adj cũng đồng thời là adv:
Early, hard, fast, long
-Nếu dùng mệnh đề quan hệ thường ta dùng với thì hoàn thành
Ex.
It/This is the best beer (that) I have ever drunk.
It/This was the worst film (that) he had ever seen.
He is the kindest man (that) I have ever met.
It was the most worrying day (that) he had ever spent.
D. So sánh kém
1. So sánh kém hơn:
S + V + less + adj/adv + than + noun/ pronoun
Ex. - Nga is less young than I.
- My brother runs less fast than I.
2. So sánh kém hơn nhất:
S + V + the + least + adj/ adv +(N) + (in/ of) + N
Ex. - These shoes are the least expensive of all.
3. So sánh lũy tiến càng ngày càng kém
S+ V+ less and less + long/short adj/ adv
She becomes less and less beautiful.
E. So sánh kép (Double Comparative)
a) So sánh đồng tiến: (càng……thì càng)
The+ comparative + S + V +(O), the + comparative + S + V +(O)
Ex. The hotter it is, the more terrible I feel.
The sooner you leaver, the earlier you will arrive at your destination.

The more you study, the smarter you will become.
b) So sánh lũy tiến: (càng ngày càng…..)
- Tính từ và trạng từ dài:
S+ V+ more+ and +more + long adj/ adv
Ex. She becomes more and more beautiful.


(Cô ấy càng ngày càng xinh.)
-

Tính từ và trạng từ ngắn:
S + V + short adj/ adv + er and + short adj/ adv + er
Ex. Lan is younger and younger. (Lan càng ngày càng trẻ)

Note: Một số adj không dùng để so sánh là những adj chỉ tính chất duy nhất, đơn nhất, chỉ kích
thước, hình học (mang tính qui tắc)
Eg: only, unique, square, round, perfect, extreme, just..
COMPARISON CHART
ADJECTIVE

COMPARATIVE

One syllable adjective:
old, fast, clean, long

Older,
longer

faster,


SUPERLATIVE
cleaner, The oldest, the fastest,
cleanest, the longest

One syllable adjectives ending in Wider, nicer
–e: wide, nice

the

The widest, the nicest

Two syllable adjectives ending in Dirtier, simpler, cleverer, The dirtiest, the simplest, the
–y, -er, -ow,-le: dirty, simple, narrower
cleverest, the narrowest
clever, narrow
Other adjectives with two or More
honest,
more The most honest, the most
more syllables: honest, modern, modern, more comfortable modern, the most comfortable
comfortable
Irregular adjectives: good, bad, Better,
far, old
farther/further,
older/elder(only
family members)

worse, The best, the worst, the
farthest/the
furthest,
the

with oldest/the eldest (only with
family members)

* PHẦN II: BÀI TẬP VẬN DỤNG
I. Choose the best answer A, B, C, or D to complete each sentence.
1. Ms. Jones isn’t as nice …….. Ms. Smith.
A. as

B. for

C. like

D. to

2. The rooms in Graduate Towers are……….. Patterson Hall.
A. larger than

B. larger than that of

C. larger than those in

D. larger than in

3. Although she is very popular, she is not……her sister.
A. pretty as

B. as pretty

C. prettier than


D. most pretty than

4. Tuition at an American university runs…….. Six thousand dollars a semester.
A. so high as

B. as high to

C. as high as

D. as high than


5. Everyone looks much………. today than they did yesterday.
A. happy

B. happily

C. more happily

D. happier

6. Mr. Brown receives a …….. salary than anyone else in the company.
A. big

B. more bigger

C. bigger

D. the bigger


7. The Boeing 747 is twice…….. the Boeing 707.
A. bigger than

B. as bigger as

C. as big as

D. more bigger than

8. “Do you know that beautiful lady over there?” “ Yes, that’s Wanida. She’s…………. in her group. ”
A. more beautiful than any girl

B. more beautiful than any other girl

C. so beautiful as other girl

D. beautiful more than another girl

9. My young brother grew very quickly and soon he was…….. my mother.
A. more big than

B. so big than

C. as big as

D. too big than

10. He is not……. tall as his father.
A. the


B. as

C. than

D. more

C. more higher

D. the highest

C. shortest

D. more short

11. John’s grade……. than his sister’s.
A. higher

B. more high

12. Diana is the…….. of the three sisters.
A. more short

B. shorter

13. She speaks English as………. as her friend does.
A. good

B. well

C. better


D. the best

C. prettiest

D. most pretty

14. Of three shirts, this one is the………….
A. prettier

B. more prettiest

15. The baby’s illness is……….. than we thought at first.
A. bad

B. worst

C. worse

D. badly

C. hottest than

D. hottest

C. most slowly

D. slowest

C. better


D. the best

C. more

D. the most

C. more cheap

D. more cheaper

16. Today is the……… day of the month.
A. hot

B. hotter

17. He works more ……….. than I.
A. slow

B. slowly

18. My book is as………. as yours.
A. good

B. well

19. I love you………. than I can say.
A. much

B. many


20. It’s…………. to go by bus than by car.
A. cheaper

B. cheapest

21. That house is ………one on the street.


A. oldest

B. the oldest

C. old

D. older

22. This hotel must be……….. than the small one next door.
A. expensive

B. more expensive

C. the most expensive

D. the more expensive

23. An orange is ……… than a plum.
A. more large

B. more larger


C. larger

D. the largest

24. What is the………. thing you have done ever done?
A. more difficult

B. most difficult

C. difficulty

D. difficult than

25. This river is……… than that river.
A. narrow

B. narrowest

C. narrower

D. most narrow

26. The test is not………difficult………. it was last month.
A. as/ as

B. so/ as

C. more/ as


D. A and B

C. faster than

D. B and C

27. Peter usually drives……….. Mary.
A. more fast

B. more fast than

28. My brother sang…. of all the pupils of the group.
A. more beautifully

B. the most beautifully

C. less beautifully

D. most beautifully

29. At 3,810 meters above sea level in Bolivia stands Lake Titica, ………in the world.
A. the highest large lake

B. largest high lake

C. high largest

D. the high largest lake

30. The hotel was……. any one we had stayed at before.


31.

A. more expensive than

B. more expensive as

C. most expensive than

D. better expensive than

A: It’s a long way from Britian, isn’t it?
B: Yes, but it isn’t as………. as Hong Kong.
A. far

B. farther

C. farthest

D. further

32. Of the four dresses, which is ……………….. expensive?
A. the best

B. the most

C. the more

D. the greater


33. The larger the apartment, the................... the rent.
A. expensive

B. more expensive

C. expensively

D. most expensive

34. The faster we walk,………….. we will get there.
A. the soonest

B. the soon

C. the more soon

D. the sooner

36. “ Why did you buy these oranges? ” “They were ………. ….. I could find. ”
A. cheapest

B. cheapest ones


C. the cheapest ones D. the most cheapest
37. She plays the piano …………… as she sings.
A. as beautifully

B. more beautifully


C. as beautiful

D. the most beautifully

38. The streets are getting more and …………… these days.
A. crowded

B. less crowded

C. more crowded

D. most crowded

39. The larger the city, …………… the crime rate.
A. highest

B. higher

C. the highest

D. the higher

40. You must explain your problems …………....
A. as clear as you can

B. as clearly as you can

C. as clear than you are

D. as clearly as you are


41. Pil is ……………… person we know.
A. the happier

B. the happiest

C. happier

D. happiest

42. Which woman are you going to vote for? –I ’m not sure. Everyone says that Joan is………….
A. smarter

B. the smarter

C. more smarter

D. more smart

43. Bill is ………………
A. lazier and lazier

B. more and more lazy

C. lazier and more lazy

D. more lazy and lazier

44. It’s too noisy here. Can we go somewhere …………………?
A. noisier


B. more quie

C. more noisy

D. quieter

45. ……………….. the time passes, ……………. I feel ! The deadline of my thesis is coming, but I have
just finished half of it.
A. The faster / the nervous

B. The more fast / the nervous

C. The fast / the more nervous

D. The faster / the more nervous

46. China is the country with………………….. population.
A. the larger

B. the more large

C. the largest

D. the most large

47. She sat there quietly, but during all that time she was getting……………. Finally she exploded.
A. more and more angry

D. the most angry


B. the more angry

C. angrier and angrier

48. For ……………….., it is certain that in the future some things will be very different.
A. the better or the worse

B. the good or the bad

C. good or bad

D. better or worse

49. Her grandfather’s illness was………………….. we thought at first.
A. more seriously as

B. as seriously as

C. more serious than

D. as serious than

50. My brother was feeling tired last night, so he went to bed………….. usual.
A. more early than

B. as early as

C more earlier as


D. earlier than


51. _______ you study for these exams, _______ you will do.
A. The harder / the better

B. The more / the much

C. The hardest / the best

D. The more hard / the more good

52. His house is _______ mine.
A. twice as big as

B. as twice big as

C. as two times big as

D. as big as twice

53. A: It’s hot there, isn’t it?
B: It’s very……….. during the day.
A. hot

B. hotter

C. hottest

D. hotter than


C. The best

D. The better

54. ………. apples are grown in Washington State.
A. Best

B. The most good

55. The test becomes………. and…………
A. hard/ hard

B. difficult/ difficult

C. harder/ harder

D. difficulty/ difficulty

56. His health is getting………. and…………….
A. good/ good

B. better/ better

C. bad/ bad

D. well/ well

57. The more paper we save,…………preserved.
A. more is wood pulp


B. the more wood pulp is

C. wood pulp is

D. the much wood pulp is

58. The more polluted air we breathe,……. we get.
A. the more weaker

B. the more weak

C. the weaker

D. weaker more

C. better than

D. good

59. The more we study, the……we are.
A. more good

B. better

60. The more I tried my best to help her, ………. she became.
A. less lazy

B. the lazier


C. the more lazy

D. lazier

61. The weather becomes………………
A. colder with colder

B. colder and colder

C. colder and more colder

D. more and more cold

62. The more he slept,……………. irritable he became.
A. the most

B. the vey more

C. much more

D. the more

C. The harder

D. The hardest

C. The more

D. The most


63. ……….. he worked, the more he earned.
A. The more hard

B. The hard

64. ………I get to know Jim, the more I like him.
A. For more

B. More

65. The competition makes the price of goods……….
A. most cheap and cheap

B. cheaper and cheaper


C. more cheap and more cheap

D. cheaper and more cheaper

66. That factory is producing……. pollution.
A. more and more

B. better and better

C. less and least

D. more and less

67. The ………I read about history, the…….. it makes me realize how relevant history is for us today.

A. more/ better

B. better/ better

C. more/ more

D. better/ more

C. well

D. good

68. The less we study, the……….. we are.
A. worse

B. bad

69. ………. the match was, the more spectators it attracted.
A. The most interesting

B. The best interesting

C. The more interesting

D. The interesting

70. The more running water you use,……………
A. your bill will be higher

B. will be higher your bill


C. the higher your bill will be

D. the highest your bill will be

71. ……………you study for these exams, ……….. you will do.
A. The harder/ the better

B. The more / the much

C. The hardest / the best

D. The more hard / the more good

72. My neighbour is driving me mad! It seems that…………. it is at night, ……………he plays his
music!
A. the less / the more loud

B. the less / less

B. the more late / the more loudlier

D. the later / the louder

73. Thanks to the progress of science and technology, our lives have become………….
A. more and more good

B. better and better

C. the more and more good


D. gooder and gooder

74. The Sears Tower is………….. building in Chicago.
A. taller

B. the more tall

C. the tallest

D. taller and taller

75. Peter is……………John.
A. younger and more intelligent than

B. more young and intelligent than

C. more intelligent and younger than

D. the more intelligent and younger than

76. Robert does not have…………. Peter does.
A. money more than

B. as many money as

C. more money as

D. as much money as


77. It gets………….. when the winter is coming.
A. cold and cold

B. the coldest and coldest

C. colder and colder

D. more and more cold

78. French is a…………language to learn than English is.
A. difficult

B. more difficult


C. most difficult

D. more and more difficult

79. A car is………………. than a motorbike.
A. cheap

B. cheaper

C. expensive

D. more expensive

80. Thanks to the great effort of doctors and nurses, her health is getting…………….
A. worse


B. better

C. worse and worse

D. better and better

II. Choose the underlined part among A, B, C, or D that needs correcting.
1. Richard feels good than several days ago.
A

B

C

D

2. Mary and Daisy are both intelligent students. Mary is so intelligent as Daisy.
A

B

C

D

3. I found the conversation as most interesting and I was glad to practice my English.
A

B


C

D

4. The Caspian Sea, a salt lake, is the largest than any other lakes in the world.
A

B

C

D

5. He drives the car more dangerous than his brother does.
A

B

C

D

6. It was the most biggest building that I had ever seen.
A

B

C


D

7. I wish my house were so large as Jone’s.
A

B

C

D

8. The Mekong is one of the longer river in the world.
A

B

C

D

9. She can play the piano more good than her sister.
A

B

C

D

10. Many people believe that New York is the most great city in America.

A

B

C

D

11. Jessica is only an amateur, but she sings well than most professionals.
A

B

C

D

12. This house is more spacious as that white house I bought in Rapid City, South Dakota last year.
A

B

C

D

13. Lan is the more capable of the three girls who have tried out for the part in the play.
A

B


C

D

14. This telephone isn’t as cheap the other one, but it work much better.
A

B

C

D

15. Stories are the most good way of teaching moral lessons to young people.
A

B

C

D


16. The fastest you drive, the greater you get.
A

B

C


D

17. This exercise is much more easier than the others.
A

B

C

D

18. London is much more exciting as I expected.
A

B

C

D

19. The large the room is, more people can sit in it.
A

B

C

D


20. The suitcase seemed to get heavy and heavier as I carried it along the road.
A

B

C

D

III. Choose one sentence that best rewrites the sentence given:
1. They understand more than we do.
A. We don’t understand as much as they do.
B. We don’t understand anything at all.
C. They understand everything inside out.
D. They are very intelligent.
2. It is much more difficult to speak English than to speak French.
A. To speak French is more difficult than to speak English.
B. To speak English is more difficult than to speak French.
C. Speaking English is more difficult than to speak French.
D. Speaking French is not as difficult as to speaking English.
3. My interview lasted longer than yours.
A. Your interview wasn’t as short as mine.
B. Your interview was shorter than mine.
C. Your interview was as long as mine.
D. Your interview was longer than mine.
4. When I was younger, I used to go climbing more than I do now.
A. Now I don’t go climbing anymore.
B. I used to go climbing when I younger.
C. Now I don’t go climbing as much as I did.
D. I don’t like going climbing any more.

5. Your coffee is not as good as mine.
A. Mine is better than yours.
B. My coffee is better than your.
C. My coffee is better than yours.
D. My coffee is more good than yours.


6. I can’t cook as well as my mother does.
A. My mother can cook better than I can.
B. My mother can’t cook better than I can.
C. My mother can cook well than I can.
D. I can cook better than my mother can.
7. Murder is the most serious of all crimes.
A. Murder is very serious.
B. No crime is more serious than murder.
C. Everyone is very afraid of murder.
D. Murder is the dangerous crime.
8. No one in this class as tall as peter.
A. Peter is taller than in this class.
B. Peter is the tallest in this class.
C. Peter is the most tall in this class.
D. Peter is more tall than in this class.
9. This is the best music I have ever heard.
A. I’ve never heard better music than this.
B. I‘ve ever heard such a good music as this.
C. I‘ve ever heard so good music as this.
D. This is the first time I‘ve heard this good music.
10. This is the most interesting novel I’ve ever read.
A. Knowing that the novel will be interesting, I read it.
B. If only I had known the novel was so interesting, I’d have read it earlier.

C. I don’t think it is the most interesting novel.
D. I have never read a more interesting novel than this.