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上是比较相似。

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式检测方法。

Please make a sentence using the present perfect tense.

请以现在完成式时态造句。

So is the world made for introverts or extroverts?

今天 usage tip 是介绍 it 加 has been 加去词 加 that 句型 它於间接引述 以许主词 it 作为开头 搭配现在完成式被动语态 表达一直以来都有 that 子句所述主 於本句型动词 大多具有声称或是揭露含义 除了 argue 以外呢 此句型也可以使 claimreveal， report 等字词使被动语态可淡化消息来源并将重点放在所主内容上来看例句It has been revealed that several celebrities were involved in the scandal据透露有多位名人卷入这起丑闻？

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

当我上课时候，我通会先上几节关于去完成式课，然后再继续学习。

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， 一定要看那个简单去式， 去完成式个人课程，好吗？