`1`. The last time Kate phoned her mother was a week ago.

`-` Cấu trúc: The last time+ S+ Vp1+...+ was+ khoảng TG+ ago

`≈` S+ have/ has+ not+ Vpp+...+ for+ khoảng TG

`2`. It's the first time they have visited Vienna.

`-` Cấu trúc: It's the first time+ S+ have/ has+ Vpp+...

`≈` S+ have/ has+ never+ Vpp+...+ before 

`3`. She was sleeping when the fire started.

`-` QKĐ+ when+ QKĐ

`4`. My watch was bought by me two months ago.

`-` Câu bị động ( thì QKĐ): S+ was/ were+ Vpp+ [ by O]+...

`5`. I haven't eaten out for a long time.

`-` Cấu trúc: It's+ khoảng TG+ since+ S+ Vp1+...

`≈` I+ have/ has+ not+ Vpp+...+ for+ khoảng TG

`6`. English is spoken all over the world.

`-` Câu bị động ( thì HTĐ): S+ is/ am/ are+ Vpp+ [ by O]+...

`7`. Roger hasn't played tennis for six weeks.

`-` giải thích giống câu `1`

`8`. She has driven for two weeks.

`-` Cấu trúc: S+ started/ began+ Ving/ to V+...+ khoảng TG+ ago

`≈` S+ have/ has+ Vpp+...+ for+ khoảng TG

`1`.The last time Kate phoned her mother was a week ago

`\rightarrow` The last time + S + Ved / V2 + was + time / timeline 

`=>` Lần cuối làm gì

`2`.It's the first time they have visited Vienna

`\rightarrow` It is the first time + S + have / has + V3 / PII : Lần đầu làm gì

`3`.She was sleeping when the fire started

`\rightarrow` When + S + Ved / V2 , S + was / were + V-ing

`\rightarrow` Dùng để nói về hành động đang xảy ra , hành động xảy ra trong khoảng thời gian ngắn

`4`.My watch was bought two months ago

`\rightarrow` BĐ `-` QKĐ : S + was / were + V3 / PII ( by O )

`5`.I haven't eaten out for a long time

`\rightarrow` Thì HTHT ( PĐ ) : S + haven't / hasn't + V3 / PII ( `5 , 7` )

`\rightarrow` For + Khoảng thời gian ( `5 , 7 , 8` )

`6`.English is spoken all over the world

`\rightarrow` BĐ `-` HTĐ : S + is / am / are + V3 / PII ( by O )

`7`.Roger hasn't played tennis for six weeks

`8`.She has driven for two weeks

`\rightarrow` Thì HTHT : S + have / has + V3 / PII

`\text{@ Tails347}`