In addition to lively pictures and vivid colors, Zhang's textbooks adhere to his principle of starting simply. Early units focus on the pronunciation of the letters of the alphabet, saying words and spelling them, supplemented by simple dialogues. Later units focus on dialogue and basic sentence forms, supplemented by speaking and spelling vocabulary.
張思中英語教材除了圖文生動、色彩活潑外，內容編排由淺入深，前面單元以字母發音、單字的拼讀為主，簡單對話為輔；後面單元以對話、掌握基本句型為主，拼讀單字為輔。