`-` Thì QKĐ : S + Ved / V2 `-` S + was / were + adj / n

`=>` `DHNB` : yesterday , ago , last , ...

`-` Thì HTHT : S + haven't / hasn't + V3 / PII

`=>` `DHNB` : since , for , already , ...

`1`.It hasn't rained for 3 days

`2`.The weather has been cold recently

`3`.It was cold last week

`4`.I didn't read a newspaper yesterday

`5`.I didn't read a newspaper today

`6`.Emily has earned a lot of money since 2 years ago

`\text{# Kirigiri}`

*Cấu trúc quá khứ đơn:

    S + was/ were (not) + ....

    S + did not/ didn't + V-infi .....

*S = I/ He/ She/ It/ Danh từ số ít + was

 S = We/ You/ They/ Danh từ số nhiều + were

`->` 

`3.` It was cold last week.

`4.` I didn't read a newspaper yesterday.

*Cấu trúc hiện tại hoàn thành:

      S + have/ has (not) + VpII/ been .......

*S = I/ We/ You/ They + have

 S = He/ She/ It + has 

`->`

`1.` It hasn't rained for 3 days.

`2.` The weather has been cold recently.

`5.` I haven't read newspaper today.

`6.` Emily has earned a lot of money since 2 years ago.