The purpose of this study is to investigate the English language that native English teachers
use to conduct their lesson. It focuses on the presence of lesson phases, the language for
presenting in each lesson phases; the speech acts as well as the grammatical expressions
realizing those acts that they perform in instructing the lessons. Also, the comparison is made
between the grammatical expressions and the acts they perform to identify the most
preferable language expressions in performing a speech act in a language class.
The data consist of 14 lessons collected with audio-recorder in Lomonosov Private School,
Hanoi, Vietnam for analysis. The elements comprising lessons phases and the patterns
making up the act of explaining tasks, significant speech acts and their equivalent
grammatical structures are examined.
It is indicated in the study that the lesson phasessuch as opening, instructional and closing
phases were made up of various elements and can be applied in any order of appearance in
the suggestion of possible paradigm for each of thephase. Moreover, the four speech acts are
detected and analysis in terms of the language used; the polite strategies in performing the
acts; the frequency and preference of use.
This study can firstly be uses as reference for teachers of English at Lomonosov Private
School, and for any teachers who are concerned about this matter.
It is hoped that this study can help language teachers to improve and better their use of
English as language of instructions in their own classes in order to provide a more and more
natural interactions and communications to the students in Vietnam.