Unit3 Amazing people Grammar and usage课件 牛津译林版必修2
Unit3 Amazing people Grammar and usage课件 牛津译林版必修2第3页

The usage of the past perfect

Upon their entering the tomb, Carter’s lucky pet bird, which he had left in Cairo, was swallowed by a snake.

Carter left his lucky pet bird in Cairo.

Carter’s lucky pet bird was swallowed by a snake.

Past

Present

过去完成时表示过去某一时间或动作之前已经发生或 完成的动作。它表示动作发生的时间为“过去的过去”。