What is the relationship between speech event and speech act？ （Explain with an example).

By saying "You have left the door wide open" , a speaker might be performing the three acts: locutionary, illocutionary and perlocutionary______.
A．at the same time
B．one after another
C．two first and then the other
D．one first and then the other two

Conversational implicature is comparable to illocutionary force in speech act theory in that they are both concerned with the contextual side of meaning, or言外之意in Chinese.

Imagine you were at a bus stop and two people approached you one after the other. The first said;"哎,几点了？" and the second said;“不好意思，打搅一下，请问您戴表了吗？” What assumptions would you make if you were addressed in these two ways and why would you make them？

Do you think B is cooperative in the following dialogue？ Support your argument with Cooperative Principle. A: When is the bus coming？ B: There has been an accident further up the road.

Four categories of Maxims in Grice s Cooperative Principle include all the following except
A．Manner
B．Relation
C．Qualification