Keywords: Problem, Writing, Compound Complex Sentence.

This paper studies the problem of writing compound complex sentence by English
department students this study also describe the problems that students faced in writing
compound complex sentence and the data are collected from the student of English
Department batch 2014.
This study used descriptive-qualitative research in order to find out and describe the
students’ problem in writing compound complex sentence. Moreover, the researcher used
written test as the instrument and also used simple random sampling technique in selecting
the subjects of the study. Therefore, 40 students from English Department batch 2014 had
been chosen to be the subjects. Finally, the researcher used descriptive method to describe the
problems that the researcher found and then explained the problems in the discussion part
based on the data in the first test and the second test.
The research results showed that there are three problems that the students faced in
writing compound complex sentence. The major is in the conjunction. It happened because
the students have difficulties in choosing the conjunctions that are usually used in writing
compound-complex sentences. The second major problem is the punctuation. It happened
because they forget to put the punctuation or they put the punctuation in the wrong place. The
minor problem is the less knowledge about compound complex sentence. The less knowledge
here means the students already know about compound complex but the subjects still have
difficulties in choosing the conjunction and the punctuation.
The researcher also gives some suggestion to increase the problems that the student
faced. First, the teacher can give more exercise in writing compound-complex sentence such
us ask the students to make compound-complex sentence in their own or ask them to make a
paragraph compound-complex sentence. Second, the student also can learn more about
compound-complex sentence, the differences between coordinate and subordinate
conjunction. Third, in learning compound-complex sentence the student also need
comprehension deeply not only in grammatical but also in how to improve their vocabulary
in their good writing