`1.` `(-)` You didn't go to Dalat for last Tet vacation.

     `(?)` Did you go to Dalt for last Tet vacation `?`

`2.` `(-)` He didn't have a lot of friends in Ho Chi Minh city `3` years ago.

      `(?)` Did he have a lot of friends in Ho Chi Minh city `3` yeasr ago `?`

`3.` `(-)` His uncle didn't take him to see Tri Nguyen aquarium last week.

      `(?)` Did his uncle take him to see Tri Nguyen aquarium last week `?`

`4.` `(-)` They didn't put the fish in the big bag last Sunday.

      `(?)` Did they put the fish in the big bag last Sunday `?`

`5.` `(-)` They didn't eat meat for their meals in Vung Tau yesterday.

      `(?)` Did they eat meat for their meales in Vung Tau yesterday `?`

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

`-` Cấu trúc thì Hiện Tại Đơn :

`(+)` S `+` $V_{2}$ `+` O

`(-)` S + didn't + $V_{1}$ `+` O

`(?)` Did + S + $V_{1}$

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

`@kimhuyenftu`

`1. ( - )` You didn't go to Dalat for last tet vacation. 

`( ? )` Did you go to Dalat for last tet vacation?

`2. ( - )` He didn't have a lot of friends in Ho Chi Minh city 3 years ago. 

`( ? )` Did he have a lot of friends in Ho Chi Minh city 3 years ago?

`3. ( - )` His uncle didn't take him to see Tri Nguyen aquarium last week.

`( ? )` Did his uncle take him to see Tri Nguyen aquarium last week? 

`4. ( - )` They didn't put the fish in the big bag last Sunday.

`( ? )` Did they put the fish in the big bag last Sunday?

`5. ( + )` They ate meat in her meals in Vung Tau yesterday (sai lỗi ngữ pháp nên sửa lại) 

`( - )` They didn't eat meat in her meals in Vung Tau yesterday.

`( ? )` Did they eat meat in her meals in Vung Tau yesterday?

`-` Cấu trúc:

`( + )` S + V-ed/V2 + O 

`( - )` S + didn't + V-inf + O

`( ? )` Did + S + V-inf + O?