=>

1. These newspapers have been bought by Nina.

-> bị động HTHT have/has been V3/ed

2. These reports have been typed for 2 hours.

-> bị động HTHT have/has been V3/ed

3. My dogs have been taken care of by my father.

-> bị động HTHT have/has been V3/ed

4. Computer science has been studied by my brother since June.

-> bị động HTHT have/has been V3/ed

5. He has studied here since 2013.

-> chuyển QKĐ sang HTHT, S have/has V3/ed, since + mốc thời gian

6. I have not seen my old classmates since the graduation party.

-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, since + mốc thời gian

7. It has not rained for 2 weeks.

-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, for + khoảng thời gian

$\text{1.}$ These newspapers have been bought by Nina . 

→ Bị động thì HTHT : S + has/have + been + Vpp + ( by O ) 

$\text{2.}$ These reports have been typed for 2 hours . 

→ Bị động thì HTHT : S + has/have + been + Vpp + ( by O ) 

$\text{3.}$ My dogs have been taken care of by my father. 

→ Bị động thì HTHT : S + has/have + been + Vpp + ( by O ) 

$\text{4.}$ Computer science has been studied by my brother since June.

→ Bị động thì HTHT : S + has/have + been + Vpp + ( by O ) 

$\text{5.}$ He has studied here since 2013. 

→ S + started/began + to V/V-ing + when/in/on/ago/... 

→ S + has/have + Vpp + for/since + time 

$\text{6.}$ I have not seen my old classmates since the graduation party. 

→ The last time + S + Ved/cột 2 + was + time 

→ S + hasn't/haven't + Vpp + for/since + time 

$\text{7.}$ It has not rained for 2 weeks. 

→ S + last + Ved/cột 2 + O 

→ S + hasn't/haven't + Vpp + O 

$#Keisha$