This study was conducted to know whether the students of SDI Sultan Agung
3 Semarang can physically respond the writer‟s instructions through imperative
sentences or not. In mastering the vocabulary, the writer classified in three
understanding; respect to moving parts of instructions, touching classroom objects,
and following classroom order.
The sample was the fourth grade students in the academic year 2011/2012.
The writer took 31 students by using total sampling. The writer gave the test to the
students by 15 instructions which should be responded by students‟ action. The
instrument was achievement test. The writer gave 1 point for the correct response and
0 point for the incorrect one in a check list column. After getting the data, the writer
analyzed them.
The data were computed by using one sample T-test formula at SPSS
program. Based on result at SPSS, the students cannot understand the writer‟s
instructions in understanding instructions of moving parts of the body instructions,
touching classroom objects, and following classroom order. It is because, all the H0
was rejected and the H1 was accepted.
The teacher has to pay close attention that the students reached the lowest
score in the respond to respecting body movement instructions. To enrich students‟
vocabulary especially in the parts of body, the teacher should use to a good method in
teaching learning process.

Keywords: Vocabulary Mastery, Imperative Sentences, TPR, Young Learners.