Abstract:
The aims of this research are (1) to describe students‟ mastery level in using
to be and auxiliary verb in simple past tense sentences of the first grade of SMA
Negeri 1 Kutowinangun in the academic year of 2016/2017. (2) to identify
students‟ difficulties in mastering to be and auxiliary verb in simple past tense
sentences of the first grade of SMA Negeri 1 Kutowinangun in the academic year
of 2016/2017.
This is a quantitative descriptive. This thesis explains about the usage of to be
and auxiliary verb on first grade of SMA Negeri 1 Kutowinangun. In collecting
data, the researcher are prepared the research instrument, giving the test to the
students, collected the students‟ worksheet, analyzing the data, the researcher
made the percentage of correct and wrong answer for to be and auxiliary verb.
This research was conducted at SMA Negeri 1 Kutowinangun on Thursday April
20th 2017. The samples of this research are 66 students which have chosen by
random sampling. The researcher took two classes, X MIA 1 and X MIA 4 as the
subject of this research.
The result shows that the students can not between differentiate to be and
auxiliary verb in simple past tense sentences and to get the solution the students
should give more attention about to be and auxiliary verb. The mean score of the
students‟ mastery level of using to be and auxiliary verb is 65.88. Based on the
table achievement it is on the range 56-65 which is categorized as fair. Then the
mean score of the students‟ mastery level of using to be is 71.36, based on the
table achievement it is on the range of 66-79 which is categorized as good. The
mean score of the students‟ mastery level of using auxiliary verb is 64.77, based
on the table achievement it is on the range 56-65 which is categorized as fair. And
based on the result of interview, the researcher found some of the students
difficulties in mastery to be and auxiliary verb in simple past tense sentences,
those difficulties are confuse about the subject (singular and plural), confuse about
the verb whether irregular or regular verb, confuse to differentiate to be and
auxiliary, do not know the structure and do not understand the meaning.
