A Present perfect tense

The present perfect is almost a kind of present tense.

现在完成时总是一类现在时态。

When we make a present perfect sentence, we could usually make a present tense sentence about the same situation.

造现在完成时的句子，我们通常会造现在时态的句子。

So you learn the past tense and then two or three weeks later, oh now you are learning the present perfect, and then a few weeks later, you are learning the future, that's crazy.

你学习了过去时，然后两到三周后你开始学习现在完成时，几周以后你又开始学习将来时，这简直太疯狂了。