(1)Describe the results/facts圖文並茂地描述e.g. describe the path of water through the water cycle (2)list逐點逐點列舉論點/特點/理由/原因e.g. list the four stages for the formation of life (3)state 以文字陳述/說明e.g. state the principle of moments (4)explain what/why/how說明如何/理由/原因e.g. explain why the moon goes through phases as seen from earth