$10$ `:` watched

`->` Thì QKĐ `-` DHNB `:` last night

$11$ `:` traveled 

`->` Thì QKĐ `-` DHNB `:` in the past

$12$ `:` have had

`->` Thì HTHT `-` DHNB `:` since , however

$13$ were crossing `-` saw 

`->` As `+` S `+` was / were `+` V`-`ing , S `+` V2 / V`-`ed `+` O.

$14$ `:` was walking `-` saw

`->` While `+` S `+` was / were `+` V`-`ing ,  S `+` V2 / V`-`ed `+` O.

$15$ `:` went out `-` was shining 

`->` When `+` S `+` V2 / V`-`ed , S `+` was / were `+` V`-`ing `+` O.

$16$ `:` had gone `-` sat `-` rested 

`->` After `+` S `+` had `+` VpII ,  S `+` V2 / V`-`ed `+` O.

$17$ `:` came `-` had finished 

`->` Before `+` S `+` V2 / V`-`ed , S `+` had `+` VpII `+` O.

$18$ `:` rang `-` was having

`->` When `+` S `+` V2 / V`-`ed , S `+` was / were `+` V`-`ing `+` O.

$19$ `:` were singing `-` came 

`->` S `+` was / were `+` V`-`ing `+` when `+` S `+` V2 / V`-`ed `+` O.

$20$ `:` went `-` had stopped

`->` S `+` V2 / V`-`ed `+` as soon as `+` S `+` had `+` VpII `+` O.

$\text{* Vì ở đây chúng ta sẽ có công thức của thì hiện tại hoàn thành dạng:}$

$\text{→ Công thức thì hiện tại hoàn thành có dạng:}$ 

$\text{( + ) S + have \ has + PP + O + time }$

$\text{( - ) S + have \ has + not +PP + O + time}$

$\text{( ? ) Have \ has + S + PP + O + time ? }$

$\text{→ Dấu hiệu nhận biết thì HTHT sẽ gồm có như sau: }$

$\text{⇒ just , recently , lately }$

$\text{⇒ already}$

$\text{⇒ before}$

$\text{⇒ ever }$

$\text{⇒ never }$

$\text{⇒ yet }$

$\text{⇒ for + khoảng thời gian \ since + mốc thời gian }$

$\text{⇒ so far = until now = up to now = up to the present}$

$\text{⇒ in/ for/ during/ over + the past/ last + time }$

$\text{→ Thì quá khứ đơn sẽ có dạng như sau : }$

$\text{⇒ Công thức thì QKĐ với động từ thường :}$

$\text{( + ) S + V_ed \ 2 + O + time}$

$\text{( - ) S + didn't + V_inf + O + time}$

$\text{( ? ) Did + S + V_inf + O + time ?}$

$\text{⇒ Công thức thì QKĐ với động từ tobe: }$

$\text{( + ) S + was \ were + O + time }$

$\text{( - ) S + was \ were + not + O + time}$

$\text{( ? ) Was \were + S + O + time ? }$

$\text{→ Dấu hiệu nhận biết thì QKĐ sẽ gồm có như sau: }$

$\text{⇒ yesterday }$

$\text{⇒ ago }$

$\text{⇒ last ( week ,.....)}$

$\text{⇒ in + time ( in the past) }$

$\text{⇒ the day before }$

$\text{⇒ today}$

$\text{⇒ this afternoon, this morning }$

$\text{→ Và ta sẽ còn có cụm công thức có dạng như ở dưới đây:}$

$\text{⇒  As\when\while + S + was\were+V_ing+ O ; S + V_ed\2+O}$

$\text{⇒ Diễn tả một sự việc đang xảy ra thì một sự việc khác chen vào}$

$\text{→ Và ta sẽ còn có hai công thức nữa có dạng như sau:}$

$\text{⇒ Công thức Before + S + V_ed\2 + O ; S + had + PP + O}$

$\text{⇒ Công thức After + S + had + PP + O ; S + V_ed\2 + O}$

$\text{1 watched }$

$\text{2 travelled }$

$\text{3 have had }$

$\text{4 were crossing , shouted }$

$\text{5 was walking , saw }$

$\text{6 went out , was shining}$

$\text{7 had gone , sat , rested }$

$\text{8 came , had finished }$

$\text{9 rang , was having }$

$\text{10 were singing , came }$

$\text{11 went , had stopped }$

$\text{Học tốt!!!}$