Hello, I'm a language expert with a strong background in both English and Chinese. I'm here to provide you with accurate and helpful information on your query regarding the use of the relative pronouns "which," "who," and "that."
The question of whether "which" is singular or plural is a common one in English grammar. The answer is that it can be either, depending on the context in which it is used. The number (singular or plural) of these relative pronouns is determined by their antecedent, which is the noun or pronoun to which the relative pronoun refers.

### Relative Pronouns and Their Antecedents

Relative pronouns are used to introduce a clause that provides additional information about a noun or pronoun in a sentence. The three relative pronouns in question—"which," "who," and "that"—can refer to either people or things, and their number must agree with the noun they are referring to.

#### Examples:


1. Singular Antecedent:
- The book which I read was fascinating.
(Here, "which" refers to "the book," which is singular, so "which" is also singular.)


2. Plural Antecedent:
- The books which I read were fascinating.
(In this case, "which" refers to "the books," which is plural, so "which" is plural as well.)

#### Agreement with Collective Nouns

Sometimes, the decision on whether to use a singular or plural verb after "which" can be influenced by whether the antecedent is a collective noun, which can be tricky because collective nouns can be treated as either singular or plural.

- Treated as Singular:
- The team which won the match was very focused.
(The team is a collective noun, but it's treated as a single entity here.)

- Treated as Plural:
- The team which were playing exhibited great teamwork.
(Here, the focus is on the individual members of the team, so "which" is plural.)

### **Relative Pronouns "Who" and "That"**

"Who" is used exclusively to refer to people, and it will always take a plural verb if it refers to more than one person.

- Singular:
- The person who answered the phone was the manager.

- Plural:
- The employees who attended the meeting were all department heads.

"That" can refer to both people and things and follows the same rule as "which" in terms of agreeing with its antecedent.

- Singular:
- The building that stands at the end of the street is a historical landmark.

- Plural:
- The houses that were built last year are all very modern.

### Conclusion

In conclusion, the relative pronouns "which," "who," and "that" are versatile and can be singular or plural based on their antecedents. It's essential to identify the antecedent correctly to ensure that the verb agrees in number. This rule is a fundamental aspect of English grammar that helps maintain clarity and coherence in written and spoken communication.

Now, let's move on to translating the explanation into Chinese.

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It is in fact possible, however, for the relative pronouns "which," "who," and "that" to be either singular or plural. They take their number from their antecedent--the words to which they refer. That is, if the antecedent is plural, the pronoun is plural and therefore takes a plural verb.read more >>