About English issues

1. Strictly speaking, your so-called verb phrases/verb phrases do not have these titles in English grammar. Of course you can say it yourself so that you can understand and remember it.

The writing method of "put it quickly on" does not conform to English standards. It is better to write "put it on quickly". Because put on is a fixed collocation, it is best not to break it into pieces like this, which is difficult for people to understand.

Put in on the desk does not belong to these two phrases. It is just a fixed collocation of transitive verbs, that is, transitive verbs often have the following structure: transitive verb object preposition/adverb.

For example: give it to me; read it in the classroom; do it carefully

2.

1) The complete form of I think so. cannot be Written, because so refers to the affirmative situation above, it will change accordingly due to the different forms above.

For example: --Is there going to be an exam tomorrow? --Yes, I think so.

So refers to there is going to be an exam tomorrow.

2) After adding a preposition to the intransitive verb, when adding an object clause, the preposition is absolutely indispensable.

So: I agree with what he said. √; I agree what he said. ×

3. Even if there is a difference, is it necessary to distinguish?

4. These two thieves are correct;

But this one girl/this a girl is wrong.

Explanation: If there is only one, and there are other determiners in front of it, then the article/numeral expressing one is redundant and must be removed.

For example: my friend √; and my a/one friend ×

5.

1) Phrase prepositions are fixed collocations and cannot be changed, such as: instead of; due to; because of, etc.;

The prepositional phrase is the prepositional phrase, and its object is not fixed, such as: in this classroom, but it can also be said in that classroom.

2) Prepositional phrases generally serve as predicatives/postpositional attributives/complements/adverbials in sentences.

For example: I'm on duty today. Predicative; Do you know the boy in the tree? Postpositional attributive; I found him on the playground. Complementary; I'm reading in the room. adverbial.

3) What's in the room? The preposition phrase in the room is a predicative.