THE MODAL COMPLEMENT is used to describe or evaluate the state of an action or behavior.
Nǐ jīntiān chuān de hěn piàoliang a .
“How often do you visit your parents?”
This is a very simple sentence in English but it could be tricky to translate it into Chinese. In Chinese language, we don’t have a question word for “how often”. Our secret four will show you the trick: THE COMPLEMENT OF FREQUENCY.
First, let’s see a simpler sentence: How many times have you been to China?