1.3 PURPOSES OF THE STUDYIn this study, the researcher use the detail of noun clause, the different types, and thedifferent function of noun clauses in complex sentences in order to investigate thecomprehension of noun clause of the students at KU.CSC. The researcher would like to achievethe result of making the research is as follows:1.3.1 To find out the comprehension of noun clause of the students at KU.CSC.1.3.2 To investigate the problem of noun clause of the students at KU.CSC.