Various forms of passive voice, such as negation, doubt, etc. . . Find a composition method

First of all, the passive voice depends on what the word is. Some intransitive verbs have no passive voice.

Let's talk about the passive voice first, which is actually very simple.

That is, take the object of the original sentence as the new subject, add the be verbs (am, is, are, was, were), then turn the verbs of the original sentence into past participles, add by+ the subject of the original sentence (some contents after this by can be omitted), and the rest of the sentence remains unchanged.

For example:

China invented paper.

Paper was invented in China.

Did people in China invent paper?

The passive form is paper. Was it invented in China?

Some passive voices express the same meaning, while others emphasize that this should be studied carefully and suggest doing more exercises. Buying books is actually very comprehensive.

There are many examples, so I won't mention them. I typed it myself. Oh, you can ask me questions. I wish you get good grades ...

No, I forgot to write it. If the original sentence is negative, the passive voice sentence should be followed by a negative sentence, and the last sentence should be changed to was't