Unit5thefourthperiod课件（新人教版选修6）.ppt

Unit 5 ;Unit 5; Teaching methods situational teaching method ; cooperative learning method; programmed teaching method; task-based and assessment teaching methods.;Teaching aims and demands;Arrangement of teaching;;The height of the land varies from 700 metres above sea level to over 2,000 meters and is home to a great diversity of plants and animals. 这里的地面高度从海拔700米到2,000多米不等，是各种各样的动植物的生长地。;vary v. 呈现不同 ；改变，变化 My husband varies the vegetables he plants each year. 我的丈夫每年都种不同的蔬菜。 vary from…to… 由…到…不等； 从…变为… ;These fish vary in price from ￡3 to ￡5. 这些鱼的价格从3镑到5镑不等。 Her mood varied from optimism to extreme depression. 她的情绪由乐观一变而极为消沉。;variety (质量，种类或特征的)变化 You need a lot of variety in your diet. 你的膳食要多样化。 种类，品种 different varieties of bananas 不同品种的香蕉;diversity n. 变化多样，多样性 (相当variety) The plants of Asia show a great diversity of form. 亚洲的植物形态多种多样。 There must be a diversity of opinions. (对此)准是众说纷纭。;I. 根据下列各句句意及所给单词的首字母或汉语提示，写出各单词的正确形式。 1. His lips started to t______ and then he started to cry. 2. It’s so hot, you start s______ the minute you walk outside. 3. He caught the u______ opportunity and succeeded.;4. I was a______ about the children when they didn’t come back home from school. 5. I got into a(n) ______ (恐慌) when I found the door was locked.;II. 用所给词的适当形式填空。 1. This river is dangerous to ______ (bath) in. 2. It’s natural that there is a ______ (diverse) of opinions within the organization. 3. There is growing public ______ (anxious) over levels of air pollution in our city. ;III. 根据括号内的提示将下列句子翻译 成英语。 我们不能保证我们所有的航班都不误点。(guarantee) 2. 这里的天气时时都在变化。(vary) ;3. 他匆匆看了一遍那道题就开始回答了。 (glance through) ;Homework