If you don't put in the " to be" verb, it's wrong.

如果你不把不规则动词放在这里，那就是错的。

We use the to be specific.

我们用“the”来具体说明。

These are both read out the same way. Notice that the 'to' is unstressed.

这些都以相同的方式读出。 请注意，“to” 没有重读。

But when we do that, we usually invert the to be verb and the subject.

但是当我们这样做时，我们通常会颠倒 to be 动词和主语。

In these cases, the " to" is sometimes used and sometimes not depending upon how the speaker thinks it sounds.

在这些情况下，有时使用“to” ，有时不取决于说话者认为它听起来如何。

In order to create the negative, you simply add the word, not, between the to be form of the verb and the ING form.

为了创建否定，你只需在动词的 be 形式和 ING 形式之间添加单词 not。

But instead of just writing " to be verb" , it really, really helps you if you write out the different forms of the " to be" verb.

但是，如果你写出“to be”动词的不同形式，而不是只写“to be verb”，它真的、真的对你有帮助。