Knowledge gained in each chapter itself. Know the structure of the sentence A vocabulary that is familiar. Distinguish the sentence Each class will have difficulty varies in each chapter .
The knowledge gained in each chapter, it has to know the structure of the sentence have no vocabulary to rummage, have ever seen a difference sentence. Learn in each the difficulty varies in each chapter
The knowledge that has been learned in each chapter นั้้น structure of a sentence is not a word that has been รู้้ chickens had ever seen the difference of a sentence, will be studying in each of difficulty vary in each chapter