2.2.2.2 Wh-interrogative clause
This can function as subject, direct object, subject complement, appositive,
adjectival complement and prepositional complement.
Subject: Why you did that is still a mystery
Direct object: No one tell me who broke my car
Subject complement: The question is where Mary is
Appositive: Their wishes - how they can be more beautiful - never become
true
Adjectival complement: I am unbelievable how he can solve it
Prepositional complement: They argued about when they made a cake
Bạn đang xem 2. - THE STUDY ON ENGLISH NOMINAL CLAUSE AND VIETNAMESE EQUIVALENCE