Công thức thì QKĐ (V: thường)

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, …

Công thức thì TLĐ

(+) S + will + V1 

(-) S + won't + V1 

(?) Will + S+ V1? 

DHNB: in the future, in + năm ở TL, in + time, next week, next year, ....

Công thức thì HTĐ (V: thường)

S số ít, he, she, it 

(+) S + Vs/es

(-) S+ doesn't + V1 

(?) Does +S +V1?

S số nhiều, I, you, we, they

(+) S + V1 

(-) S+ don't + V1 

(?) Do + S+ V1? 

DHNB: always, usually, sometimes, often, never, seldom,....

Công thức thì HTTD 

(+) S + am/is/are + Ving 

(-) S + am/is/are + not + Ving 

(?) Am/Is/Are +S +Ving? 

DHNB: now, right now, (!), at present, at the moment,.....

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37. Did the boys play Tinh instrument?

38. Did you watch the Ban Flower Festival in Dien Bien 2 years ago?

39. Will they practice a folk dance of the Thai people?

40. Does English play an important part in our society nowadays?

41. Are they doing the homework at the moment?

42. Does he eat five-colour sticky rice?

43. Does she often go to boarding school?

44. Did they have the meeting in the communal house? 

`color{orange}{~LeAiFuRuiHuiBao~}`