This thesis presents a comprehensive study of the Japanese double-ga construction and offers an explanation as to why the Japanese double-ga construction does not allow scrambling. In chapter 2, the particle-ga and the particle-wa are defined as the focus marker and the topic marker respectively. The different shades of meaning that both particles have are also explained. Chapter 3 illustrates the Japanese double -ga construction. Chapter 4 deals with the impossibility of scrambling in the double-particle constructions. A strong parallelism is shown between the double-ga construction and the double-wa construction. The claim is that there are three "pragmatic slots" that the particle-ga and -wa can occupy in the sentence. The rigid-fixed-order of these three slots contributes to the prohibition of scrambling.