Nữa nè <3 `-------` Đề: There is a mistake in each of these sentences. Underline the mistake anf then correct it

` 1. ` knew ` -> ` have known ( DHNB: For some months )

` 2. ` didn't see ` -> ` haven't seen ( DHNB: Since Monday )

` 3. ` was ` -> ` has been ( DHNB: For 2 years )

` 4. ` have gone ` ->` went ( DHNB: Last night )

` 5. ` for ` -> ` in ( DHNB: Moved )

` 6. ` learn ` -> ` learnt / learned 

` 7. ` was ` -> ` has been ( DHNB: For a week )

` -----------------------`

` - ` HTHT:

` ( + ) ` S + have / has + V ( 3 / ed ) + O

` ( - ) ` S + have / has + not + V ( 3 / ed ) + O

` ( ? ) ` Have / has + S + V ( 3 / ed ) + O?

` - ` Wh_q + have / has + S + V ( 3 / ed ) + O?

` - ` DHNB: Since + mốc thời gian, for + quãng thời gian, already, before, lately, recently, ...

` -> ` Dùng để miêu tả một sự việc đã xảy ra trong quá khứ và còn liên quan đến hiện tại

` - ` QKD:

` ( + ) ` S + V ( 2 / ed ) + O

` ( - ) ` S + did + not + V ( 2 / ed ) + O

` ( ? ) ` Did + S + V ( 2 / ed ) + O?

` - ` DHNB: Yesterday, ago, in + năm, last, ...

` -> ` Dùng để miêu tả sự việc đã kết thúc trong quá khứ

`2` .knew `->` have known

`3` .didn't see `->` haven't seen 

`4` .was `->` has been 

`5` .have gone `->` went

`6` .moved `->` have moved

`7` .learn `->` learnt

`8` .was ill `->` has been ill 

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

`=>` cấu trúc quá khứ đơn: 

`(+)` S+V2/-ed

`(-)` S+did not+V-inf

`(?)` Did+S+V-inf

`(?)` wh-word+did+S+V-inf

`DHNB`: 

`-` trong câu có các từ: yesterday,ago,last,in the past,the day before,in+khoảng thời gian trong quá khứ 

`-` sau as if,as through,it's time,if only,wish,would sooner,rather...

`=>` cấu trúc hiện tại hoàn thành

`(+)` S+have/has+V3/-ed

`(-)` S+have/has+not+V3/-ed

`(?)` Have/has+S+V3/-ed

`(?)` wh-word+have/has+S+V3/-ed

`DHNB`:

`-` before: trước đây

`-` ever : đã từng

`-` never : chưa bao giờ

`-` for + quãng thời gian

`-` since + mốc thời gian

`-` yet: chưa

`-` just=recently=lately

`-` so far, up to now,up to the present