1.

Word form dạng danh từ (noun) thường có các hậu tố sau: -ation/-tion/-sion, -er, -ment,
-ant/-ent, -age, -al, -ence/-ance, -ery/-ry, -ism, -ship, -age, -ity, -ness, -cy.

●​ -ation/-tion/-sion: alteration, demonstration expansion, inclusion, admission,…

●​ -er: advertiser, driver, computer, cooker,…
●​ -ment: development, punishment, unemployment ,…
●​ -ant/-ent: assistant, consultant student,…
●​ -age: breakage, wastage, package,…
●​ -al: denial, proposal, refusal, dismissal,…​
Lưu ý: hậu tố -al cũng xuất hiện trong một số tính từ
●​ -ence/-ance: preference, dependence, interference, attendance, acceptance,
endurance,…
●​ -ery/-ry: bribery, robbery, misery, refinery, bakery,…
●​ -ism: Marxism, Maoism, Thatcherism,…
●​ -ship: friendship, citizenship, leadership,…
●​ -age: baggage, plumage,…
●​ -ity: ability, similarity, responsibility, curiosity,…
●​ -ness: darkness, preparedness, consciousness,…
●​ -cy: urgency, efficiency, frequency,…

Tiền tố

●​ anti- (chống lại): anticlimax, antidote, antithesis,…

●​ bi- (hai): bilingualism, biculturalism, bi-metalism,…
●​ co- (cùng): co-founder, co-owner, co-descendant,…
●​ counter- (chống, ngược với): counter-argument, counter-example, counter-proposal,…
●​ ex- (cựu): ex-chairman, ex-hunter,…
●​ in- (không, trái ngược với): inattention, incoherence, incompatibility,…
●​ inter- (giữa): interaction, inter-change, interference,…
●​ mal- (sai): malfunction, maltreatment, malnutrition,…
●​ mis- (sai): misconduct, misdeed, mismanagement,…
●​ sub- (dưới): subset, subdivision,…
●​ super- (trên, nhiều hơn): superset, superimposition, superpowers,…
●​ sur- (trên, nhiều hơn): surtax,…
●​ tele- (xa): telecommunications,…

2. Word form dạng động từ (verb) thường có các hậu tố sau: -ise, -ate, -fy/-ify, -en.

●​ -ise: stabilise, characterise, symbolise, visualise, specialise,…

●​ -ate: differentiate, liquidate, pollinate, duplicate, fabricate,…​
Lưu ý: hậu tố -ate cũng xuất hiện trong một số tính từ (considerate, accurate,…)
●​ -fy/-ify: classify, exemplify, simplify, justify,…
●​ -en: awaken, fasten, shorten, moisten,…
Tiền tố

●​ dis- (không, ngược với): disappear, disallow, disarm, disconnect, discontinue

●​ over- (quá nhiều): overbook, oversleep, overwork,…
●​ mis- (sai, tệ): mislead, misinform, misidentify,…
●​ de- (làm điều trái ngược): devalue, deselect,…
●​ inter- (giữa): interact, intermix, interface,…
●​ pre- (trước): pre-expose, prejudge, pretest,…
●​ trans- (chuyển trạng thái): transform, transcribe, transplant,…
●​ under- (không đủ, thiếu): underfund, undersell, undervalue, underestimate,…

3. Word form dạng tính từ (adjective) thường có các hậu tố sau: -al, -ent, -ive, -ous, -ful,
-less, -able, -ly.

●​ -al: central, political, national, optional, professional,…

●​ -ent: different. dependent, excellent,…
●​ -ive: attractive, effective, imaginative, repetitive,…
●​ -ous: continuous, dangerous, famous,…
●​ -ful: beautiful, peaceful, careful,…
●​ -less: endless, homeless, careless, thoughtless,…
●​ -able: drinkable, countable, avoidable,…
●​ -ly: timely, friendly, weekly,…​
Lưu ý: danh từ + -ly = tính từ, và tính từ + ly = trạng từ.

Tiền tố

●​ un-: unfortunate, uncomfortable, unjust,…

●​ im-/in-/ir-/il-: immature, impatient, improbable, inconvenient, irreplaceable, illegal,…
●​ non-: non-fiction, non-political, non-neutral,…
●​ dis-: disloyal, dissimilar, dishonest,…

4. Word form dạng trạng từ (adverb) thường có hậu tố -ly.

●​ -ly: luckily, economically, socially,…

●​ Lưu ý: có tồn tại một số trạng từ ngắn không có các hậu tố này, ví dụ (hard, fast, well,
late, slow,…)

Question 1. He spoke with _______ about his new project.

A. enthusiasm B. enthusiast C. enthusiastic D. enthusiastically
Question 2. Tom is _______ for collecting data for the assignment.
A. response B. respond C. responsibly D. responsible
Question 3. The report was written in a very _______ manner.
A. clarity B. clarify C. clear D. clearly
Question 4. Her _______ in the meeting was very helpful.
A. contribution B. contribute C. contributing D. contributor
Question 5. He gave a _______ explanation to the problem.
A. confuse B. confused C. confusing D. confusion
Question 6. The new policy will _______ affect all employees.
A. direct B. directly C. direction D. director
Question 7. The _______ of the project was successful.
A. complete B. completion C. completely D. completing
Question 8. She has a _______ approach to solving problems.
A. creative B. create C. creation D. creatively
Question 9. The book was written in a very _______ style.
A. informal B. informally C. inform D. information
Question 10. The manager provided a _______ overview of the
situation. A. short B. shorten C. shortly D. shortness
Question 11. The team is working _______ to meet the deadline.
A. hard B. hardly C. hardness D. harden
Question 12. The project’s________ was due to his hard work.
A. success B. succeed C. successfully D. successful
Question 13. They were _______ by the unexpected changes.
A. surprise B. surprising C. surprised D. surprisingly
Question 14. Her _______ to the task was admirable.
A. dedication B. dedicate C. dedicated D. dedicating
Question 15. The results were _______ different from what we
expected. A. significantly B. significance C. significant D. signify
Question 16. He addressed the problem _________.
A. effective B. affect C. effect D. effectively
Question 17. She spoke in a _______ tone during the meeting.

A. calm B. calmly C. calmness D. calmed

Question 18. The candidate showed a _______ understanding of the

subject. A. deep B. deepen C. deeply D. depth

Question 19. The teacher's _______ was well-organised and clear.

A. instruction B. instruct C. instructive D. instructively

Question 20. Wearing _______ colours on Tet is expected to bring good

luck. A. brighten B. bright C. brightly D. brightness

Question 21. Be careful with that ______ knife!

A. sharpen B. sharply C. sharpness D. sharp
Question 22. They were extremely _______ towards us during our vacation.
A. considerate B. consideration C. considerately D. consider
Question 23. The _______ of the system needs to be evaluated.
A. effectiveness B. effective C. effectively D. affect
Question 24. The meeting was held _______ to discuss the upcoming
project. A. specifically B. specific C. specifics D. specify
Question 25. The new design is _______ to the project's
requirements. A. suitable B. suitability C. suitably D. suit Question
26. Her speech was very _______ and left a lasting impression. A.
powerful B. power C. powerfully D. empower Question 27. The
_______ of the book was clear in the review.
A. importance B. important C. importantly D. import
Question 28. He performed the task with great _______.
A. care B. careful C. careless D. carefully
Question 29. Her speech at the meeting was ________.
A. encourage B. encouragingly C. encouragement D. encouraging
Question 30. We had a _______ experience in Da Nang last year.
A. memorable B. memorise C. memory D. memorably

1. The company offers a __________ program to help employees develop new skills. (train)

2. His __________ behavior at the party surprised everyone. (child)

3. The manager plans to __________ the team by hiring new members. (strength)

4. The __________ of the team contributed to their victory. (unite)

5. We need to find a __________ solution to the environmental issue. (sustain)

6. The artist hopes to __________ his paintings at an international exhibition. (public)

7. The manager praised the team for their __________ in handling the crisis. (resolve)

8. The team worked together __________ to complete the project ahead of schedule.
(efficient)

9. The comedian's jokes were more __________ than amusing, causing discomfort among the
audience. (offend)

10. The employee's __________ behavior towards colleagues led to tension within the
workplace. (respect)

11. The __________ of the novel was so captivating that readers couldn't put it down.
(complex)

12. The CEO's __________ leadership style inspired a culture of innovation within the
company. (vision)

13. The documentary provided a __________ exploration of the socio-economic factors

influencing global migration. (comprehend)

14. The manager's ability to instill __________ among the team resulted in increased
productivity. (motivate)

15. Nghe An, a province in Vietnam, is undergoing rapid urban __________. (develop)