*Tương lai đơn
( + ) S + will + V(nt)
( - ) S + will not / won't + V(nt)
( ? ) Will + S + V(nt) ?
- Yes , S + will
- No , S + will not / won't
*Tiếp diễn
( + ) S + am/is/are + V_ing
( - ) S + am/is/are + not + V_ing
( ? ) Am / Is / Are + S + V_ing ?
- Yes , S + am/is/are
- No , S + am/is/are/not
*Hiện tại đơn
( + ) S + V s/es
( - ) S + don't /doesn't + V(nt)
( ? ) Don't / Does + S + V(nt) ?
- Yes , S + do/does
- No , S + don't / doesn't
*Qúa khứ đơn
( + ) S + Ved / phân từ I
( - ) S + didn't + V(nt)
( ? ) Did + S + V(nt) ?
- Yes , S + did
- No , S + didn't
