Basically, what they are is they're helper verbs.

基本上，它们是辅助动词。

So as with the progressive aspect, the thing that changes is the helper verb.

因此，与进行性方面一样，改变的是助动词。

" Had" is a helper verb; " been" is a helper verb; and our main verb is " lying" .

“Had”是助动词； “been”是助动词；我们的主要动词是“说谎”。

Again, we've got two helper verbs here, " had" , " been" -- helping verbs.

同样，我们这里有两个辅助动词，“had”、“been”——辅助动词。

" They have been lying." In these examples, we have two auxiliaries; we have two helper verbs.

“他们一直在撒谎。”在这些例子中，我们有两个助剂；我们有两个辅助动词。

Today we're gonna talk about a class of auxiliary, or helper verbs, called the modal verbs.

今天我们要讨论一类助动词或辅助动词，称为情态动词。

If it doesn't have any helper verbs for the past or the present and the only helper verb it has for the future is will, then it's simple.

如果它没有任何表示过去或现在的助动词，而它唯一表示将来的助动词是 will，那么它很简单。

Finally, there are some helper verbs, or auxiliary verbs called models, that are super weird, and have these properties that aren't repeated anywhere else in English.

最后，还有一些辅助动词，或称为模型的助动词，它们非常奇怪，并且具有这些在英语其他任何地方都没有重复的属性。

Tag questions always have some sort of what we would call a helper verb, a verb like " do" or " is" or " was." For example, " You don't like me, do you? " Or, " You play basketball, don't you? "

标签问题总是有某种我们称之为帮助动词的东西， 一个动词，如“do” 或“is”或“was” 。 例如，“你不喜欢我， 是吗？