Peter couldn’t finish unloading the truck because no one was there to help him. -> If
1 câu trả lời
1. If someone there had helped him, Peter could have finished unloading the truck
=> Câu điều kiện loại 3: S+ had+ Ved/ V3, S+ could/ will might+ have+ Ved/ v3
Câu hỏi trong lớp
Xem thêm