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strategies and how the participants adopt turns in the conversation to get to their goals.
　　　Second, nowadays TV show has come to occupy a prominent place in people’s lives, and more and more TV dating shows appear on TV. It seems that more and more people pay much attention to this kind of TV program; because the conversations in these dating shows are humorous and reflect several social phenomena. By the conversation between the guests and the hosts, TV dating shows have attracted a large number of audiences. TV dating show discourse is by nature a kind of conversation which is based on turn-taking, the analysis of turn-taking mechanisms in the conversations of TV dating show is expected to show new insights into the appreciation and understanding of turn-taking and the program.
2 Literature Review
　　　Before introducing previous studies of turn-taking, it is necessary to make sure what turn is, what adjacency pairs are and what turn-taking rule is. So this part will firstly explain the concept of turn, of adjacency and of turn-taking, and then the relevant research into turn-taking will be explained in detail.
2. 1 Turn
　　　Turn is the basic structural unit of daily conversation. It is what a speaker says in a conversation from the starting of the talk until the end of the talk or the interruption by others. Conversation is an orderly connection process. Without a prior arrangement, the participants of the conversation talk by turn. A turn can be made up of different language items, such as words, phrases, clauses, sentences and sentence groups. (He Qiran, 2011: 124) For example:
the turn is a word
A: Well they’re not comin.
B: Who. (T)
A: Uh Pum, Unless the can find somebody.
The turn is a phrase.
   A: Oh I have the – I have one class in the evening.
   B: On Mondays? (T)
   A: Yeah, uh, Wednesday.
   B: Uh, Wednesday.
      A: En it’s like a Mickey Mouse Course.
The turn is a sentence.
   A: You been down here before yeh haveenche.
   B: ……
   A: Where the sidewalk is? (T)
   B: Yeah.
   A: Whur it ends, (T)
   B: Goes all away up there?
   A: They come up tuh there.
2. 2 Adjacency Pairs
　　　Adjacency pairs are a fundamental unit of conversational structure. They are sequences of two utterances as the result of turn-taking. The two utterances are ordered as a first part and second part. A particular first part requires a particular second part., e.g. offers requiring acceptance or rejections, greetings requiring greetings, questions requiring answers, etc. (Yang Zhong, 2002: 116) For example:
　　　　A: Can I help you?
　　　　B: Sure.
　　　However, not all first parts are immediately followed by second parts. It often occurs that the answer is delayed by another pair of question an answer. For example:
      A: Can I go out now?
      B: Have you finished your homework?
      A: Yes.
      B: Yes.
2.3 Previous Studies on Turn-taking Mechanism
2.3.1Turn-taking Mechanism
　　　In 1974, Sacks, Schegloff and Jefferson published the work “A simplest