How do teachers use language appropriately for classroom functions?

How do you know if you are using language appropriately, well “classroom functions are the purpose for which we use language in the classroom” (Spratt, Pulverness, & Williams, 2011) Exponent depends on the learning context and purpose, the learners ‘needs, their age and level. Base on this topic there are some tips that we as teacher must take into account. First, the language of the teacher never should be above the learner´s level, as teachers should try to use formal language and be very polite, shows solidarity. Second, Language should be graded to suit the language level and age of the learners, in this case is acceptable to use simple language with beginner but is unacceptable to use it with advance learners. Finally, Sequencing using language means use it in a logical way, gives to our students the instructions clearly, if it is possible write the instructions down on the board. To conclude, the teacher should choose which exponents they are going to use for classroom functions before teaching.