`1.`

$(+)$ We often play hide - and - seek at break time.

$(-)$ We don't often play hide - and - seek at break time.

$(?)$ Do we often play hide - and - seek at break time?

`2.`

$(+)$ Binh does judo everyday, so he is healthy.

$(-)$ Binh doesn't do judo everyday, so he isn't healthy.

$(?)$ Does Binh do judo everyday? And is he heathy?

`3.` 

$(+)$ My father has breakfast at 6.30.

$(-)$ My father doesn't have breakfast at 6.30.

$(?)$ Does your father have breakfast at 6.30?

`4.` 

$(+)$ Nam often plays football with his friend after finishing class.

$(-)$ Nam doesn't often play football with his friend after finishing class.

$(?)$ Does Nam often play football with his friend after finishing class?

`5.` 

$(+)$ My sister and I do our homework in the evening.

$(-)$ My sister and I don't do our homework in the evening.

$(?)$ Do your sister and you do your homework in the evening?

`6.` 

$(+)$ I have English and Maths today.

$(-)$ I don't have English and Maths today.

$(?)$ Do you have English and Maths today?

`7.` 

$(+)$ Thao usually plays the guitar in her free time.

$(-)$ Thao doesn't usually play the guitar in her free time.

$(?)$ Does Thao usually play the guitar in her free time?

`8.`

$(?)$ Does Mrs. Lam have lunch with her friends?

$(+)$ Mrs. Lam has lunch with her friends.

$(-)$ Mrs. Lam doesn't have lunch with her friends.

`9.`

$(+)$ They are healthy. They do morning exercises in the morning.

$(-)$ They aren't healthy. They don't do morning exercises in the morning.

$(?)$ Are they healthy? And do they do morning exercises in the morning?

`10.` 

$(+)$ My father often does the gardening at weekend.

$(-)$ My father doesn't often do the gardening at weekend.

$(?)$ Does your father often do the gardening at weekend?

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`-` Cấu trúc của thì HTĐ với động từ thường:

$(+)$ S + V(s/es).

$(-)$ S + do/does +  not + V_inf.

$(?)$ Do/ Does + S + V_inf?

`-` Cấu trúc của thì HTĐ với động từ tobe:

$(+)$ S + is/ am/ are + ...

$(-)$ S + is/ am/ are + not + ...

$(?)$ Is/ Am/ Are + S + ...?

`-` Sau các trợ động từ do/ does là động từ nguyên mẫu.

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$@haanx2$