Mệnh đề danh từ (Noun Clauses)

Mệnh đề danh từ là một mệnh đề đóng vai trò như một danh từ trong câu. Chức năng của mệnh đề danh từ thông thường là Chủ ngữ (Subject), Tân ngữ (Object), hoặc Bổ ngữ (Complement).
Có 3 loại mệnh đề danh từ:
  1. Mệnh đề bắt đầu với that 
  2. Mệnh đề bắt đầu với if/ whether
  3. Mệnh đề bắt đầu với từ để hỏi who, what, where, when, why, how ...
THAT CLAUSE

Subject (Chủ ngữ)
 That the average global temperature is rising has been proven.
▪ That he didn't keep the promise is disappointing.

Subject Complement (Bổ ngữ cho Chủ ngữ)
▪ Anna's problem was that she was always late for school.
▪ It is believed that regular exercise reduces stress.

Object (Tân ngữ)
▪ I understand that you have been busy.
▪ I believe that a college education is important.

Adjective Complement (Bổ ngữ cho Tính từ)
▪ It is important that students attend classes regularly.
▪ We were glad that you enjoyed the trip.
▪ I am afraid that I can't come to your graduation party.

Noun Complement (Bổ ngữ cho Danh từ)
▪ It is my personal opinion that primary students should get less homework.

IF/ WHETHER CLAUSE

Subject (Chủ ngữ)
▪ Whether the man survived or not is not known.

Subject Complement (Bổ ngữ cho Chủ ngữ)
▪ The question is whether or not she wants to move to England.

Object (Tân ngữ)
▪ I don't know if I can finish the report by 3:00.
▪ We'll ask the kids whether they are interested in summer camp.
ask (verb)
the kids (indirect object)
whether they are interested in summer camp (direct object)

Object Complement (Bổ ngữ cho Tân ngữ)
▪ Everybody wants to know if John comes to the meeting tomorrow.
wants (verb)
to know (direct object, infinitive phrase)

QUESTION CLAUSE

Subject (Chủ ngữ)
▪ What causes global warming will be discussed at the conference tomorrow. 
▪ Who robbed the bank last Friday is still under investigation. 
▪ Where you live affects your child's education.
▪ Why did you choose this university is a typical university interview question.
▪ How he managed to escape prison remains unknown.

Subject Complement (Bổ ngữ cho Chủ ngữ)
▪ One of the most asked questions is when should I take a COVID test.
▪ The question is how long does it take to get over the loss.

Object (Tân ngữ)
▪ We appreciate what you are doing for all of us.
▪ My husband asked me where I put the keys.
asked (verb)
me (indirect object)
where I put the keys (direct object)

Object Complement (Bổ ngữ cho Tân ngữ)
▪ The students want to know who got the highest GPA this year.
want (verb)
to know (direct object, infinitive phrase)

Adjective Complement (Bổ ngữ cho Tính từ)
▪ I'm not sure which dress suits me better.