Transformation
1, It started raining 2 hours ago.
→..................................................................
2, It last snowed here two years ago.
→The last time ............................................
→ It is ...............................................,...........
→ It hasn't ...............................................................
Đây nhé bạn!
* S+ started/began+ V_ing/To_V(inf)+ in/when+ago
= S+ has/ have+ Vpp+ since/for
* The last time+ S+V(QKĐ)+ was+ in/when/ago
= S+ last+ V(QKĐ)+ in/when/ago
= S+ haven't/hasn't + Vpp+ since/for
= It's/It has ben + khoảng thời gian+ since + S+ last+ V(QKĐ)
Transformation
1, It started raining 2 hours ago.
→ It has rained for 2 hours
2, It last snowed here two years ago.
→The last time it snowed here was 2 years ago
→ It is 2 years since it last snowed here
→ It hasn't snowed here for 2 years