The present perfect is covered in Unit 8.

现在完成时在第8单元讲解。

'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.

I have eaten是动词eat的现在完成时；I had eaten是过去完成时；I will have eaten是将来完成时。

To grasp the usage of the present perfect tense.

掌握现在完成时态的用法。

Talk about the uses of the present perfect tense.

表示过去发生的事对现在仍有影响。

French tense to the present perfect tense in English.

法语中没有和英语的现在完成时完全对应的时态。