`1` It's the first time he has ever read this kind of story 

`=>` S + hasn't / haven't + Vpp + before 

`=` It's the first time + S + has  / have + ever + Vpp + O 

`2` `->` It last rained `4` months ago 

`->` The last time it rained was `4` months ago 

`=>` S + hasn't / haven't + Vpp + for + time 

`=` It last + Ved / V2 + time + ago 

`=` The last time + S + Ved / V2 + was + time + ago

`3`  We have studied English since we were too young.  

`=>` S + started + to - V / Ving + when + mốc thời gian 

`=` S + have / has + Vpp + since + mốc thời gian 

`4` When did you paint the door ? 

`=>` How long have / has + S + Vpp + O ? 

`=` When + did + S + V + O ? 

`5` `->`  Mr. Nam last cooked when he was sick 

`->` The last time Mr. Nam cooked was when he was sick 

 `=>` S + hasn't / haven't + Vpp + since + mốc thời gian 

`=` S + last + Ved / V2 + when + mốc thời gian 

`=` The last time + S + Ved / V2 + was + when + mốc thời gian

`6` It's `3` months since Tom last swam 

`=>` S + hasn't / haven't + Vpp + for + time 

`=` It's + time + since + S + last + Ved / V2 +  

# Ríttttt 🍉 (ㆁωㆁ)