The  last  language  feature  is  the  use  of  negotiation  language.  Usually speakers  use  negotiation  language  to  seek  for  clarification.  The  use  of
negotiation language  is important for students because they  need to ask for clarification when they are listening to someone else. The use of negotiation
language  is  also  used  to  show  the  structure of  what  speakers  are saying.  In this case, students need to use certain phrases if they want to be understood
by the others.
c. Basic types of classroom speaking performance
Based  on  Brown  2004:141-142,  there  are  five  types  of  speaking. Those  are  imitative,  intensive,  responsive,  interactive,  and  extensive  or
monologue.  The range depends on the complexity of learning to speak in the target language.
The imitative speaking performance deals with imitating words andor sentences.  This  kind  of  performances  focuses  on  how  well  the  students
pronounce  words  and  gives  no  focus  on  how  students  understand  and express ideas in conversations. Brown 2001: 271 states that when learners
perform  an  intonation  contour  or  try  to  identify  a  particular  vowel  sound, the  aim  is  not  for  the  purpose  of  the  meaningful  interaction  but  for
concerning on some particular elements of language forms. The  second  type  of  speaking  performances  is  called  intensive
performance. Intensive performances focus on building up students’ mastery
in grammatical andor phonological aspect of language.
The  third  type  of  speaking  performances  is  called  responsive performance.  This  type  of  speaking  performance  involves  students  to  take
part in a very short conversation or an interaction such as standard greeting, small  talk,  simple  requests,  comments,  and  many  other  similar  interactions
that can make students to be more active in classroom talk. The  fourth  type  of  speaking  performances  that  has  a  higher
complexion  than  the  previous  types  mentioned  before  is  interactive speaking.    Even  though  this  kind  of  speaking  performances  is  similar  to
responsive  speaking  that  also  invites  students  to  actively  involve  in  the interactions andor conversations, there is a difference between them. The
difference between responsive and interactive speaking is in the length and  complexity  of  interaction,  which  sometimes  includes  multiple
exchanges andor multiple participants. The  last  type  of  speaking  performances,  which  is  the  most  complex
one,  is  extensive  performance.  This  speaking  performance  tasks  include speeches,  oral  presentation,  and  story-telling,  during  which  the  opportunity
for  oral  interaction  from  listeners  is  either  highly  limited  or  ruled  out together.  In  these  tasks,  the  register  is  more  formal  and  deliberative.  In
addition, these speaking performances can be either planned or impromptu. In conclusion, I can say  that the students of grade X Nursing class of
SMK  Muhammadiyah  3  Klaten  Tengah  were  focusing  on  intensive  and interactive  performances.  It  was  because  through  role  play,  I  want  the
students  to  be  aware  of  their  grammar  and  to  be  more  active  in  speaking
English correctly.
d. The difficulties in speaking