các từ academic có thể thay thế cho các từ informal

1. Used to -> Accustomed to
2. Help -> Assist
3. Start, begin -> Commence, initiate
4. Make up -> Constitute (tạo thành)
5. Stop -> Desist
6. Take away -> Deduct
7. Decide -> Determine
8. Cut off -> Disconnect
9. Choose -> Select, Elect
10. Set up, create, form -> Establish
11. Carry out, do -> Implement
12. Check -> Verify
13. Cut -> Reduce

14. help : provide sb chance to do st , bestow upon sb st
15. Make : to conducive to st, better / strengthen relation 

16. important -> crucial, critical

17. be desperate to do st (be keen to), 

18. every which way (all directions)  

 important: vital
Urgent: pressing
reMarkable: conspicuous,prominent
Compulsory: imperative

called- appealed
Support - assistance
Spend - allocate
Crisis-hurdles

expect: look forward to, yearn, long

carry out có thể thay bằng conduct 

agree = concur

cause = trigger
understand = comprehend
change = alter
consider = deem
... try very hard to do sth = endeavor to do sth
give sth to sb/sth = endow sb/sth with sth
be connected with sth/sb = pertain to sth/sb
follow = ensue
stare at sb/sth = regard/contemplate sb/sth
make use of sth = utilise sth (as sth)
happen/ start to exist = arise
allow sb to do sth = permit sb to do sth
kill sb = eliminate sb
remember = recall / recollect sth/doing sth

erudite - well-read
indisposed - ill
abscond - run away
enquire - ask
reserve - book
... condescending - snobbish
euphoria - happiness
assuage - ease
covet - desire
elude - escape
commodious - roomy
exalt - praise
replete - full
tedious - dull
elixir - cure-all
accord - agreement
animated - lively
exasperate - irk
exhort - urge
tranquil - calm

happen (v) : occur
get (v) : obtain, acquire
clear (adj) : obvious ,apparent
make (v) : create
need (v) : require
... timetable (n) : schedule
university (n): academy
national (adj) : domestic
original (adj): initial
suitable (adj) : appropriate
finish, complete (v) : finalize
skilful (v) : professional
discuss (v) : debate
set up (v) : establish , found
show (v) : indicate, demonstrate, display
result (n) : consequence
get rid of (v) : eliminate, outcome
entrance (n) : access, approach
problem, matter (n) : issue
basic, main ,most important (adj) : prime

enough: sufficent; edequate

More: additional; added
Things: sectors; items; objects
Big: significant; substantial; vast
Important: prime; crucial;
Serious: urgent; grave
... People: the public
Small: minimal
Bad: negative; detrimental
Not important: trivid

example = instance

used to = accustomed to nghĩa là quen với