`38`. I rarely play hopscotch with my friends at school.

`39`. I often play badminton with my dad on the weekends.

`40`. My parents usually buy new books at the bookstore.

`41`. My sister never does martial arts after school.

`42`. We often go to the library to read books and study.

`43`. My mom always goes to the supermarket after work.

`_________________________________________`

`***` Cấu trúc thì HTĐ:

`+)` S + V(-s/es)

`-)` S + do/does + not + V-inf

`?)` (Wh) + Do/Does + S + V-inf?

`-` Trạng từ chỉ tần suất (always, often, sometimes, usually, never,...) thường đứng trước động từ thường và sau trợ động từ.