小组展示ppt课件

1、;.1 Changes in the Balance of Nature 第四小组： ;.2Main idea of this passage;.3Questions：1.Where can you find the information about the formation and development of the Earth?2. When was the Earth formed? 3. When did the first human beings walk the Earth?4. Which section is about mens control over natura

2、l resources?5. Which section is about the balance of nature?;.4 1.Where can you find the information about the formation and development of the Earth?uKey 2. When was the Earth formed? uKeyIn Paras 3-5.Read the first sentence of each of these paragraphs. 5 billion years ago (Para. 3);.53. When did t

3、he first human beings walk the Earth?uKey4. Which section is about mens control over natural resources?uKey3 million years ago (Para. 4)Section 2 notice its spacing and its headline;.65. Which section is about the balance of nature?uKeySection 3 notice its spacing and its headline;.7 subtitles;.8 Fo

4、cus Study1.1.A single tree may seem large compared to person. 现在分词短语作状语，表被动意义compared to;.92 2.As the number of people on Earth increases，it becomes increasingly difficult for the population to survive on the resources of the land. it + be/becomes + adj + for sb. to do sth;.10;.11The Earth was forme

5、d about five billion years ago from a rotating, circular cloud of dust and gases such as hydrogen and nitrogen. L. 7;.12with regard to; concerning 就就而论而论;.13;.14abuse: v./n.1. 滥用，妄用滥用，妄用 2. 虐待虐待;.15out of proportion L. 22survive onL. 29in harmony withL. 55take advantage ofL. 64hunger for sth.L. 65li

6、ve withL. 66be ignorant ofL. 67give backL. 67take awayL. 68;.16 Old to New;.17;.18 Chinese to English;.19;.20We are thinking:Everyone must protect planet Earth, a planet in danger.;.21outcome 2. permanent outcome 2. permanent 3. exceeding 4. likewise 3. exceeding 4. likewise 5. accelerate 5. accelerate 6. retain 6. retain 7. ignoran