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知识点五：Conversational structure
What kind of pre-sequence is A’s first utterance? (Hints: A and B are secretaries working in the same office.)
A: Are you going to be here long?
B: You can go if you like.
A: I’ll be just outside. Call me if you need me.
B: OK.
教师解析:
Pre-request
After learning pre-sequence, let’s make a summary.
