英语语言学题,

问题描述：

英语语言学题,
What is the illocution of A’s utterance in the following brief encounter?
A:You are in a non-smoking zone,sir.
B:Thanks (extinguishing the cigarette).
2．What kind of pre-sequence is A’s first utterance?(Hint:A and B are two secretaries working in the same office.)
A:Are you going to be here long?
B:You can go if you like.
A:I’ll just be outside.Call me if you need me.
B:OK.