When to use that who whom whose when in which in English sentences, etc

The antecedent of that is a person or thing, which is used as the subject, object, or predicate in the definite clause.

that is not omitted when it is used as the subject in the definite clause, and can be omitted when it is used as an object;

That does not lead to non-restrictive definite clauses;

That is not preceded by a preposition.

The antecedent word of WHO is people. Who is used as the subject, object, or predicate in the definite clause.

When the antecedent is one, ones, anyone, or those, or the relative pronoun of one of the definite clauses in a double definite clause is that, and the other relational pronoun of a person is who.

Relationship Composition. The syntactic function of a relational clause is mainly to act as a definite. In English, a relative clause is usually placed after the word (group) it modifies. The words (groups) modified by relative clauses are called antecedents

antecedent), the word that guides the relative clause is called the relative word, and the relative word refers to the antecedent and acts as a certain component in the relative clause.

For example: this is the book which interests me ("which interests me" is a relative clause that modifies the antecedent "book", while the relative word "which" refers to the antecedent "book" and acts as a subject in the relative clause. This sentence can be understood by splitting into two sentences:

this is the book.and "the book interests me").

Typical times are the highest level and so on.

The preposition + which can be used instead of when, where, and why in the definite clause, which preposition to use depends on the antecedent and the predicate verb of the clause, and the preposition should be able to be used with the antecedent.

Preposition + relative pronoun"The leading definite clause.

The relative pronoun whom, which can be placed between the main clause and the clause together with the preposition when used as the object of the preposition in the definite clause; When the antecedent refers to a person, the relative pronoun after the preposition is whom, and the rest is which, and the relative pronoun cannot be omitted; Sometimes, in order to make the relative pronoun immediately follow the antecedent it modifies, it is also possible to place the preposition after the relevant verb in the clause, in which case the which can be replaced by that. The relative pronouns which, that, whom are often omitted in colloquial and informal styles when the preposition is placed after the verb in question. Such as:

this is the room in which he used to live. =this is the room (which / that) he used to live in.This is the room where he used to live.

who's the man with whom you just shook hands? =who's the man (that / whom) you just shook hands with?Who was the guy you shook hands with just now?

However, phrasal verbs containing prepositions are generally not separated, and prepositions are still placed after the verbs. Such as:

this is the book (which / that) i'm looking for.That's the book I'm looking for.

In this type of definite clause, the choice of prepositions is generally based on the needs of the verb, as in the above examples, or according to the antecedent. Such as:

there is a mountain of which the top is always covered with snow.There is a mountain whose summit is always covered with snow.