In the example, we have the subject, " I, " the present progressive form " am cleaning, " and the object, " my house."

在这个例子中，我们有主语“I”，现在进行形式“am cleaning”，宾语是“my house”。

You shouldn't think ugh, well the present simple was the first lesson we ever had when I was 10 years old, so I don't need to do that again, I need to learn the conditionals and the subjunctive.

你不应该想，一般现在是我10岁的第一节课，所以我不需要再学了，我需要学习条件从句和虚拟语气。

If plus present tense verb, will plus future tense verb.

“If”一般现在，“will”将来态的动词。

The emphasis on data gathered first-hand, combined with a cross-cultural perspective brought to the analysis of cultures past and present, makes this study a unique and distinctly important social science.

强调收集第一手资料，在分析过去和现在文化形态采用跨文化视角，使得这一究成为一门独特并且非常重要的社会科学。

It is helping the verb " watch" along with the present participle ending -ing to become the present progressive tense.

它帮助动词watch和现在分词结尾-ing一起构成现在进行。

And again, I've got your present perfect here.

同样地，这里我使用了现在完成。

So, a building, it's already been built, so why is it in the present continuous or the present progressive?

一栋建筑，已经建造好了，为什么要用现在进行呢？

Right here, " I have been wearing" present perfect continuous, great tense.

这里，“I have been wearing”，现在完成进行，很好的态。

When Claudia asks Daryl whether nostalgia influences his present-day Christmases, Daryl responds, indeed it does.

当克劳迪娅问达里尔，怀旧之情是否会影响他现在的圣诞节，达里尔回答说indeed it does。

So why do you think there's so much interest in space exploration when we could be exploring what we have right here?

那么，当我们本可以探索我们现在拥有的东西，你认为为什么人们还对太空探索有这么大的兴趣呢？

But the beginning of Benny's life was very different to his life now.

但是班尼的人生开始和现在有很大不同。

" How long" is often used with the present perfect verb tense.

" How long" 经常用于现在完成。

When our attention is in the present moment, we push fear from our minds.

当我们的注意力集中于现在，我们便能消除恐惧。

When I was younger, I used to actually pride myself on my music snobbery. But nowadays, it just feels like I'm potentially cutting myself off from hearing some great ideas.

当我比现在年轻，我曾为自己在音乐的势利心而骄傲，但是如今，这感觉就像是我把自己隔绝了起来，可能听不到一些了不起的想法。

This is the present perfect continuous, the past perfect uses had.

这是现在完成进行，过去完成使用的是 had。

Those are, when you look at network numbers now, you're like, hmm. - I know.

当你看到现在的网络数据，你会说，嗯。- 我懂。

With Unless, usually you use the present tense in the conditional clause.

使用 Unless，你通常要在条件从句中使用现在。

This is one of the most common uses of the present simple.

这是一般现在的最常见的用法之一。

Constitutional confusion was averted when Tyler himself decided that he was now the president.

当泰勒决定现在担任总统，宪法混乱得以避免。

The college junior was 16 years old when Trayvon Martin was killed in 2012.

2012年，特拉万·马丁被杀，现在已经大三的迪克森才16岁。