我现在完成时已经学会了这首歌。

I have learned this song in the present perfect.

他们现在完成时已经搬进了新家。

They have moved into their new house in the present perfect.

我们现在完成时已经完成了所有的作业。

We have finished all our homework in the present perfect.

你现在完成时已经看过这部电影了吗？

Have you seen this movie in the present perfect?

她现在完成时已经去过巴黎三次了。

She has been to Paris three times in the present perfect.

现在完成时总是一类现在时态。

The present perfect is almost a kind of present tense.

一般过去和现在完成时

Simple past vs. present perfect

一般过去时还是现在完成时?

Past simple or present perfect?

现在完成时在第8单元讲解。

The present perfect is covered in Unit 8.

现在完成时经常变成过去完成时。

The present perfect tense (have always been) usually changes to the past perfect tense (had always been).