`-` Thì HTĐ :

`+` KĐ : S + Vs / es `-` S + is / am / are + adj / n

`+` PĐ : S + don't / doesn't + V `-` S + isn't / 'm not / aren't + adj / n

`+` NV : Do / Does + S + V ? `-` Is / Am / Are + S + adj / n ?

`=>` `DHNB` : always , usually , often , sometimes , never , every , ...

`=>` ĐT Tobe :

`*` I `+` am ( not )

`*` He , She , It `+` is ( not )

`*` You , We , They `+` are ( not )

`=>` ĐT Thường :

`*` I , You , We , They `+` V-inf `-` don't V-inf

`*` He , She , It `+` Vs / es `-` doesn't V-inf

`Ex.3`.

`1`.don't play

`2`.doesn't clean

`3`.doesn't do

`4`.don't watch

`5`.don't wake up

`6`.don't go

`7`.doesn't carry

`8`.doesn't teach

`9`.don't tell

`10`.don't fly

`Ex.4`.

`1`.How often do they play volleyball ?

`->` How often dùng để hỏi về mức độ thường xuyên

`2`.What does he look like ?

`->` Hỏi về ngoại hình :

`=>` What + do / does / ... + S + look like ?

`3`.What makes a lot of noise ?

`->` What dùng để hỏi về cái gì

`\text{# TF}`

Đáp án:

`III.`

`1,` don't play

`2,` doesn't clean

`3,` doesn't do

`4,` don't watch

`5,` don't wake up

`6,` don't go

`7,` doesn't carry

`8,` doesn't teach

`9,` don't tell

`10,` don't fly

* Thì Hiện tại đơn - Động từ thường $(-)$ S + don't / doesn't + V

- I / You / We / They / N (số nhiều) `->` Chia don't

- He / She / It / N (số ít) `->` Chia doesn't

`IV.` 

`1,` How often do they play volleyball?

- Hiện tại đơn - Động từ thường $(?)$ Do / Does + S + V

- How often dùng để hỏi về tần suất

`2,` What does he look like?

- What + Trợ động từ + S + look like ?

`->` Dùng để hỏi về ngoại hình, dáng vóc của ai đó

`3,` What makes a lot of noise?

- What dùng để hỏi về cái gì