Cấu trúc 86 (1) Past Perfect + (2) Connector + (3) Past

Cấu trúc 86
(1) Past Perfect + (2) Connector + (3) Past

We (1) had already finished eating (2) when our boss (3) offered to take us out to dinner!

1. He had been waiting for two hours when the telephone suddenly rang.
2. I had already been planning my holiday when the boss told me I had to work overtime.
3. She had been studying for the exam for two months before learning that it was cancelled.
4. When we arrived at the football match, they had already been playing for 15 minutes.
5. I had just started using my computer when the electricity suddenly went out.