Công thức thì HTHT

(+) S + has/have + V3/ed 

(-) S + has/have + not + V3/ed 

(?) Has/Have + S+ V3/ed?

DHNB: before, since + mốc thời gian, for + khoảng thời gian, yet, already, just,....

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 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 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,.....

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, ...

-------------------------------------------------

32. are staying 

DHNB: now (HTTD)

33. goes 

DHNB: usually (HTD)

34. plays 

35. will study

S + hope(s) + S+ will + V1 

36. won't play 

S + promise(s) + S+ won't + V1 

37. have visited

38. is going 

DHNB: now (HTTD)

39. will become 

DHNB: in the future (TLD)

40. used 

QKD +when + QKD 

used to + V1: đã từng 

41. could 

DHNB: last year (QKD)

42. taught 

QKD +when + QKD 

43. has visited

This / it is the ... time + S+ has/have +V3/ed 

44. have never eaten 

DHNB: never, before (HTHT)

45. have ever seen 

DHNB: ever  (HTHT)

46. have met 

S + be+ the + ADJ +est + N + S+ has/have + V3/ed 

47. has just written

DHNB: just (HTHT)

48. has lived 

DHNB: so far (HTHT)

49. has written 

DHNB: up to now (HTHT)

50. have spoken 

DHNB: up till now (HTHT)

`color{orange}{~MiaMB~}`