Past perfect vs past simple 1. I already (hear)......... about the accident when he (tell)..........me about it 2. Our guest (be)...........still here when he (come) ............back from school
2 câu trả lời
1. I had already heard/ told ( qk hoàn thành)
Công thức: S + had + VpII
2. were/came( qk đơn)
Công thức:
Tobe: S + was/ were + O
Thường : S + V-ed/ VQK (bất quy tắc) + O
