One of the reason I didn't phone you was that I was very busy -> If................

One of the reason I didn't phone you was that I was very busy

-> If I had free time, I could have phoned you

Tạm dịch: Nếu tôi đã có thời gian rảnh, tôi đã gọi bạn rồi

đây là câu điều kiện trong tiếng Anh loại 3

nếu nó là phủ định ta chuyển thành khẳng định còn nếu nó là khẳng định ta chuyển nó thành phủ định.

MONG TUSS CHO HAY NHẤT Ạ, MIK TRẢ LỜI RẤT CHI TIẾT NHA TUSS.

One of the reason I didn't phone you was that I was very busy

-> If I hadn't been busy, I would have called you

* Dấu hiệu: I didn't phone you và I was very busy

⇒ Câu điều kiện loại 3: S+ had+ V-ed/ PII, S+ would, could,... have+ V-ed/ PII

* Tạm dịch: Nếu tôi không bận, tôi đã gọi bạn rồi

$#Jade$