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Object relative clauses are those where the element contained is not the subject of the verb in the clause. There is another subject. The pronoun can be omitted in the case of Who/Which (or That), although this is usually informal.

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Object relative clauses are those where the element contained is not the subject of the verb in the clause. There is another subject. The pronoun can be omitted in the case of Who/Which (or That), although this is usually informal.

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Subject relative clauses are those where the element contained is the subject of the verb in the clause. The pronoun cannot be omitted in any case. 

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Subject relative clauses are those where the element contained is the subject of the verb in the clause. The pronoun cannot be omitted in any case. 

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Relative clauses are also divided into subject and object.

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Relative clauses are also divided into subject and object.

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Relative Clauses: The Grammar Gameshow Episode 11

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 Non-defining clauses are considered to add information that is not essential to the sentence. They can be omitted, they appear between commas and they cannot present the pronoun That instead of Who/Which.

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 Non-defining clauses are considered to add information that is not essential to the sentence. They can be omitted, they appear between commas and they cannot present the pronoun That instead of Who/Which.

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Defining clauses are considered to be essential for a full understanding of the sentence. They cannot be omitted, and they can present the pronoun That instead of Who/Which.

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Defining clauses are considered to be essential for a full understanding of the sentence. They cannot be omitted, and they can present the pronoun That instead of Who/Which.

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Relative clauses (the part of the sentence that contains the relative pronoun) are divided into defining and non-defining.

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Relative clauses (the part of the sentence that contains the relative pronoun) are divided into defining and non-defining.

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When the element refers to a moment in time, we use when (Ex: Today is when we finish the exams).

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When the element refers to a moment in time, we use when (Ex: Today is when we finish the exams).

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When the element refers to a place, we use where (Ex: The house where I live…)

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When the element refers to a place, we use where (Ex: The house where I live…)

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When the element refers to a possession belonging to a person/thing, we use whose (Ex: The man whose car is red…).

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When the element refers to a possession belonging to a person/thing, we use whose (Ex: The man whose car is red…).

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When the element refers to a thing/animal/abstract notion, we use which/that (Ex: The dog which/that lives here…).

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When the element refers to a thing/animal/abstract notion, we use which/that (Ex: The dog which/that lives here…).

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When the element refers to a person, we use who/that (Ex: The man who/that lives here…). Whom appears in sentences where the verb requires a preposition (Ex: The man for whom I work…). 

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When the element refers to a person, we use who/that (Ex: The man who/that lives here…). Whom appears in sentences where the verb requires a preposition (Ex: The man for whom I work…). 

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Relative pronouns are used as a means to combine two sentences that share a common element. The element that is combined will modify the pronoun we use.

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Relative pronouns are used as a means to combine two sentences that share a common element. The element that is combined will modify the pronoun we use.