This document discusses adverbs in Vietnamese. It explains that adverbs are typically formed by adding "-ly" to adjectives or changing the "-ble" ending of adjectives to "-bly". Some adverbs like "well" and "hard" are not derived from adjectives. Adverbs can modify verbs, adjectives, or other adverbs. They can indicate how often, manner, place, time, or duration. Generally, if a word modifies a verb it is an adverb, except when certain linking verbs are used the word is an adjective.

1. ADVERBS
1/. CẤU TẠO ADVERB:
(1.1) Thông thường:
Adj+-ly  Adv
(1.2) đ/v: Adj đuôi –ble:
-ble  -bly
(1.3): hoàn toàn mới:
good  well
(1.4): không đổi:
hard  hard hardly: khó mà, gần như không
fast  fast
early early
late  late lately: dạo này (+HTHT)
2/. LOẠI ADV, VỊ TRÍ, DẠNG CÂU HỎI:
S+ (Aux/Mod) AdvF+Vthường (How often …?)

2. S+ Vthường+ AdvM (How ……..?)
S+ Vthường+ AdvM+AdvP+AdvT
(Where ..? When….? What time? How long..?)
3/. ADJECTIVE hay ADVERB ?
Qui tắc: Bổ nghĩa cho Vthường là Adv
Ngoại lệ: Trừ các V sau + Adj: (What+be+S+like?
What do/does/did+S+look/feel/taste/sound/smell
like?)
S+Vthường+Adv S+Vlinking+ Adj
be/become/get/turn/go/
keep/stay/remain/
seem/appear/prove/
look/feel/taste/sound/smell