1 polite (adj) -> politely (adv)
2 convenivent (adj) -> conveniently (adv)
3 pretty (adj) -> prettily (adv)
4 rapid (adj) -> rapidly (adv)
5 impatient (adj) -> impatiently (adv)
6 exciting (adj) -> excitingly (adv)
7 soon (adj) -> soon (adv)
8 excellent (adj) -> excellently (adv)
9 miserable (adj) -> miserably (adv)
10 thirsty (adj) -> thirstily (adv)
11 nervous (adj) -> nervously (adv)
12 usually (adj) -> usually (adv)
13 fortunate (adj) -> fortunately (adv)
14 possible (adj) -> possibly (adv)
15 regular (adj) -> regularly (adv)
16 economic (adj) -> economically (adv)
17 violent (adj) -> violently (adv)
18 silent (adj) -> silently (adv)
19 automatic (adj) -> automatically (adv)
20 cheerful (adj) -> cheerfully (adv)
@ Thông thường các adj -> adv thì thêm "ly" vào đằng sau