2015-2016学年 译林版 必修三 unit 3 Back to the past grammar课件 (19)
2015-2016学年 译林版 必修三 unit 3 Back to the past  grammar课件 (19)第3页

The disappearance of Justin (make)Kelly very unhappy.

has made

We use the present perfect tense to talk about things that happened in the recent past, but are connected to the present.

The uses of the present perfect tense