It is also discovered that questioners of chinese courts share lots of similarities in topic control with those of american courts despite the different legal systems . the present study may contribute to the topic study and may help to understand the nature of courtroom interaction 同时，通过对中美两国法庭会话材料的对比，我们发现，尽管两者在法律制度上有所不同，但问话人在法庭问话中对话题的控制却存在很大的相似性。
