UNIT 55 : Noun phrase = Reduced noun clause

UNIT 55 : Noun phrase  = Reduced noun clause

UNIT 55.5.4

A. Do you know what you should do ?   <= noun clause.

==> you , should  removed and input to.

B. Do you know what to do ?  <== noun phrase <== Doesn't have subject.

A.와 B. 는 같은 뜻.