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Kazupocketmonster Posted 8 years ago
Grammar

Who construction?

Is my interpretation correct?

A) I don’t know who Erika is.

B) Oh, she is a nurse who takes good care of me.

A) I don’t know who is Erika.

B) Oh, she is the taller of the two girls standing over there.

  

Top answer

[1] I don’t know who Erika is . [2] * I don’t know who is Erika . Example [1] is fine but [2] is ungrammatical.

  • [1] I don’t know who Erika is .
  • [2] * I don’t know who is Erika .
  • Example [1] is fine but [2] is ungrammatical.
  • The underlined elements are subordinate interrogative clauses.
  • But clauses like this don't have subject-auxiliary inversion, which is why [2] is ungrammatical.
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1 Answers
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[1] I don’t know who Erika is.

[2] *I don’t know who is Erika.

Example [1] is fine but [2] is ungrammatical.

The underlined elements are subordinate interrogative clauses. But clauses like this don't have subject-auxiliary inversion, which is why [2] is ungrammatical.

The meaning of [1] is

"I don't know the answer to

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