What are logical subjects and predicates?

This is the most dizzy part of English.

Logical subject: it is the executor or receiver of non-predicate verb action; They have a subject-predicate relationship or a verb-object relationship logically, but they cannot be directly used as the subjects of non-predicate verbs, so they are called logical subjects.

Judgment of logical subject:

1. The subject of the sentence is the logical subject of the non-predicate verb, and there is a logical subject-predicate relationship or a verb-object relationship between them. For example:

He likes helping others. (He is the logical subject of help)

Moved by his words, I told him all the news. (I am the logical subject moved)

2. The object of the preposition of or f or is the logical subject of the non-predicate verb. For example:

It's very kind of you to tell me the news.

You can't finish so much work in such a short time.

3. The object in the compound structure is the logical subject of the non-predicate verb. For example:

The teacher asked me to answer his question. (Me is the logical subject of to answer)

I saw him playing by the river. (He is the logical subject of play)