中国大学MOOC: According to the interactional view of language, in order to know how to do what you want to do involves knowing whether it is appropriate to do, and where, when and how it is appropriate to do it, you have to study the patterns and rules of language on the vocabulary level to learn how language is used in different speech contexts.

What do people tend to do while engaging in a conversation? A: Repeat what their partners say one way or another. B: Focus as much as possible on topics of mutual interest. C: Imitate their partners’ gestures without their knowing it. D: Observe carefully how their partners make use of gestures.

What do people in Edinburgh do on New Year's Day?

______what to do,the man telephoned the police． A: Not known B: Not knowing C: Don't know D: Knowing not

______ what to do, the man telephoned the police. A: Not known B: Not knowing C: Don't know D: Knowing not