This study aims to describe the use of the monitor hypothesis in adult learner.
This research is focused on the English spoken language. This study was conducted with
descriptive analysis methods. This method was carried out by describing the results of the
findings found in the data obtained. In collecting the data, the researcher used observation
notes and sound recordings. The results of this study found that the learner was included to
the over user monitor. Where he always corrected and was very careful when he wanted to
make a sentence. Then, the results of this study also found that the sentence that learner
made was always based on his thinking in Indonesian language. In other words, translating
Indonesian language into English.