English Grammar Notes
Defining and Non-Defining Relative Clauses
Types of Sentences with Relative Pronouns
Defining Clauses
These clauses provide essential information and cannot be removed without changing the meaning of the sentence. For example: "Ximon is one of the students who got sick."
In defining clauses, the relative pronoun can be omitted if it is the object of the verb (not the subject).
Non-Defining Clauses
These clauses provide extra information and can be removed without changing the meaning of the sentence. For example: "Ximon, who got sick, is a good student."
Relative Pronouns and Prepositions
Informal Style
The relative pronoun comes before the preposition. For example: "The person who I spoke to..."
Formal Style
The preposition comes before the relative