Abstract
In considering a curriculum of Japanese education for foreign children, it is very important that we recognize elements which students will acquire rather easily and those which they will not. Now I am conducting research on longitudinal study on acquisition of Japanese as a second language on two Brazilian children who are in the fourth grade of public school. This controlled study concerns the process of Japanese passive and causative. The study also compares the children's linguistic development to that of native children, making clear the special characteristics of foreign children's language acquisition.
