`1)`

`(+)` My teacher started teaching here 6 years ago

`(-)` My teacher didn't start teaching here 6 years ago

`(?)` Did you teacher start teaching here 6 years ago?

`2)`

`(+)`Jane often went to school on foot 3 years ago 

`(-)` Jane didn't often go to school on foot 3 years ago

`(?)` Did Jane often go to school on foot 3 years ago?

`3)`

`(-)` The cat didn't want to eat yesterday 

`(+)` The cat wanted to eat yesterday

`(?)` Did the cat want to eat yesterday?

Áp dụng `:`

`( + )` S + Ved/V2  + O

`( - )` S + didn't + `V_0` + O

`( ? )` Did + S + `V_0` + O?

`- - -- - - - -`

$\text{@Tnhye@}$

`text{1. (+) my teacher started teaching here 6 years ago}`

`text{(?) Did your teacher stared teaching here 6 years ago}`

`text{(?) Did your teacher stared teaching here 6 years ago }`

`text{2. (+)jane often went to school on foot 3 years ago}`

`text{(-) Jane didn't often went to school on foot 3 years }`
`text{(?) Did Jane often went to school on foot 3 years}`

`text{3. (+) The cat want to eat yesterday}`

`text{(-) The cat didn't want to eat yesterday}`
`text{(?) Did the cat want to eat yesterday}`

..........................................................................................................................

`text{Sử dụng công thức : }`

`text{(+) S + V-ed + O}`

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

`text{(?) Did + S + V-inf +  O }`