Please make a sentence using the present perfect tense.

请以现在完成式时态造句。

American and British English speakers use the present perfect verb tense in similar ways.

英式英语和美式英语在现在完成式使用上是比较相似。

When I have a class, I'll usually do a few lessons on past perfect before moving on.

当我上时候，我常会先上几节关于过去完成式，后再继续学习。

Now we have a filtration type of lab that you can do literally at home.

而现在，我们有了一种可以在家里完成过滤式检测方法。

So we should be able to get to a South Korea-type prioritized testing thing within a few weeks.

所以我们应该能够在几周内完成韩国式优先测试。

Well, first of all you probably realize these are all present perfect progressive sentences, and they have a lot of things in common.

好吧， 首先你可能意识到这些都是现在完成进行式句子，它们有很多共同点。

So, if you feel that you need some more practice, by all means, watch that individual class on the past simple, on the past perfect, okay?

所以，如果你觉得你需要更多练习， 一定要看那个简单过去式， 过去完成式个人程，好吗？