The difference between which and that when the antecedent is a thing in an attributive clause

1. that can represent both things and people, and which represents things; They are used as subjects or objects in clauses, that as objects can often omit relative words, and which as objects can also be omitted. [eg: this is the book (which) you want.] 2. If which is the object of the preposition "intransitive verb+preposition" in the clause, be careful not to throw away the preposition, and the preposition is always placed in front of the relative pronoun which, but some are placed in its original position. 3. When representing things, which is often used, but in the following cases, that is used instead of which: a) The antecedent is anything. B) when the antecedent is modified by every, any, all, some, no, little, few, much, etc., that is often omitted at this time; C) When the antecedent is preceded by ordinal numbers or is superlatively modified by adjectives; D) when there are both people and things in the antecedent; E) when there are which, who and that in front of the whole sentence; F) When the antecedent is material and used as a predicative; G) when the antecedent is one; H) when the antecedent is modified by the only, the very and the same at the same time; 4. The clauses led by WHO and whom are used to modify people, and they are used as the subject and object of the clauses respectively. When whom is used as the object, it should be noted that it can be used as the object of verbs or prepositions.