At the beginning the author puts emphasis on how native speakers of a language decide if a text is a combination of unrelated sentences or is it a whole unified sentence based on hearing or reading it by the native speakers. The book ‘Cohesion in English’ showed the differences that identify the two aspects of the text, a unified whole and collection of unrelated sentences. It is informed that there are empirical factors which are text characteristics, they should be found in order to save as basis in the text. In a grammatical unit consistency is formed by a sentence supported by a clause to a group of clauses. A text is highly regarded as an exclusive semantic unit in the meaning related by a sentence or clause, however, it does not only resides sentences but encoded in sentences.

In addition, Halliday and Hasan’s (1976) explains why cohesion is considered to be the most important element of the system of a language, its potential lies in the reference of the systematic reference. Accordingly, he defines cohesion in a text as the concept of the grammatical cohesion, which deals with the structural content and lexical, deals with lexical content and knowledge, linking within a text or sentence that put the text together and gives it a meaning. Moreover, it attributes to the relations of proving that it is a communicative within the context of the text followed by continuity in the senses. He also discusses how cohesion prevails, where some elements interpret in the