`\color{#145277}{N}\color{#246483}{a}\color{#34768F} {e}\color{#44889B}{u}\color{#539AA7}{n}`

`@` Thì HTĐ : 

`(+):` S + Vs / Ves

`(-):` S + do / does + not + V-bare 

`(?):` Do / Does + S + V-bare`?`

        Wh- + Do / Does + (not) + S + V-bare `?`

`->` DHNB : Always, usually, often, frequently, sometimes

`@` He / She / It / danh từ số ít / danh từ không đếm được`+` is / does / doesn't

`@` I / You / We / They / danh từ đếm được số nhiều `+` are / do / don't

`-----------`

`1.` stay often `->` often stay

`2.` are welcome always `->` are always welcome 

`3.` usually can `->` can usually

`4.` forgets never `->` never forgets

`5.` goes often `->` often goes

`6.` usually `->` bỏ

Đáp án:
`1.`I stay often at the beach. 

`→` I often stay at the beach

`2.`You are welcome always in my home. 

`→` You are always welcome in my home

`3.`I usually can go out with my friends on Saturdays.

`→`  I can usually go out with my friends on Saturdays.

`4.`Our teacher forgets never our homework. . My dad goes often to work by bus.

`→`Our teacher never forgets our homework. . My dad goes often to work by bus.

`5.`My dad goes often to work by bus.

`→` My dad often goes to work by bus.

`6.`I usually am a good student. 

`→` I am a good student. 

`---------------------`

*FORM:

`(+)` S+V(s,es)

`(-)`S+DON'T/DOENS'T+V(0)

`(?)` DO/DOES+S+V(0)?

*Usage:

Nói về những sở thích hoặc hành động diễn ra và thường xuyên, lặp đi lặp lại nhiều lần.

Trạng từ tần suất:

never,rarely,sometimes,often,usually,always.

`-----------------`

 `color{#ffc0db}{}color{#ffdada}{s}color{#ffdada}{u}color{#ffebd6}{p}color{#fff7e1 }{e}color{#d6f9ff}{r}color{#afeeee}{a}color{#afeeee}{l}color{#ffc0db}{y}color{#ffdada}{y}color{#9999FF}`