2023版高考英语一轮总复习 高效备考新模式 第一部分 复习教材模块 Unit 3 Environmental Protection（课前自测）课件 人教选择性必修第三册.ppt

Unit 3 Environmental Protection;; 课文经典回顾;Climate scientists often mention “greenhouse effect”, which has two common 4____________ (meaning). The “natural” greenhouse effect refers to that greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, 5__________ (keep) Earth’s climate warm and habitable. However, when people produce huge amounts of extra greenhouse gases by burning fossil fuels, more heat energy is trapped 6____ the atmosphere and causes Earth’s surface temperature to rise 7_________ (quick). ;That is considered as the“man-made”greenhouse effect climate. If this trend 8__________ (continue), our planet will face further environment disasters. In order to promote a 9____________ (harmony) relationship between man and nature, governments need to make policies and take measures 10__________ (reduce) greenhouse gas emissions. As individuals, we should also reduce our “carbon footprint” by restricting the amount of carbon dioxide our lifestyles produce. ;1. A 考查冠词。表示泛指“一片”变暖的海洋。 2. found 考查非谓语动词。句中已有谓语动词showed, find应作为非谓语；又因。因主语a dead polar bear与动词find之间是被动关系，故填found。 3. how 考查连词。引导宾语从句，表示温度的增加“如何” 影响生态，故填how。 4. meanings 考查名词单复数。前有two修饰，故用复数形式。 5. keeping 考查非谓语动词。句中已有谓语动词trap，故keep应作为非谓语动词；又因methane and carbon dioxide与keep在逻辑上存在着主动关系，故用现在分词形式作状语。;6. in 考查介词。因be trapped in 是固定搭配，意为“被困在……”。 7. quickly 考查词性转换。修饰动词rise作状语，用副词。 8. continues 考查动词的时态。根据“主将从现”的原则，用一般现在时表示将来。 9. harmonious 考查词性转换。在名词relationship前作定语，要用形容词。 10. to reduce 考查非谓语动词。因take measures to do sth是固定搭配，意为“采取措施做某事”。;THANK YOU!