Recently, adaptations of the first graders are one of the big problems in education. The problems are called 'first graders' problems. This research aimed to prove what types of social initiations of verbal conversation are related with maintaining communication or what types of responses to them are related with ones in order to identify the effective communication. We observed the communication of ten young children for ten minutes when they were playing with their friends at playground in their preschool. We classify the social initiations and response to them according to Haliday (1985), Fukada et al. (1999) and Okamura and Sugiyama (2007). Additionally, we added a new category, 'non verbal initiation'. The results as follows; there are not gender differences in the function of verbal interaction. The most frequent social initiation is request; however, the most effective social initiation to maintain verbal interaction is non verbal initiation. On the other hand, the most effective response to maintain it is accompanying response. From these results we suggested some strategies for teachers, for example using non verbal social initiation and responses which lead other responses to make them develop their communication abilities for the first graders.