人教版高中英语必修三unit4全_图文288674885.ppt

Between 4.5 and 3.8 billion years ago ●Dust settled into a solid and ______ globe. ●The earth exploded to produce its ___________. ●The continued ________ of water allowed the earth to dissolve harmful gases and _____ into the oceans and seas. violent atmosphere presence acids Many millions of years later ●The first small plants on the surface of the water produced _______. ●Early _______ and all sorts of fish appeared. ●Green plants began to grow on land. ●Insects and ___________ appeared. oxygen shellfish amphibians Many millions of years later ●________ appeared and they laid eggs. ●Dinosaurs developed, laid eggs and _______ for more than 140 million years. ●Mammals rose and ____________ babies. Reptiles existed gave birth to About 2.6 million years ago ●Some small ______ animals with hands and feet appeared and spread all over the earth. Now Humans produce too much carbon _______, making the earth too hot. clever dioxide IV. True (T) or False (F). 1. The earth appeared before the Big Bang happened. 2. The original atmosphere consisted of nitrogen and oxygen. 3. The main difference between the earth and other planets is that there is water on the earth. 4. Life began in water and then on land. F F T T 5. Mammals appeared before the development of dinosaurs. 6. Dinosaurs could give birth to young baby animals and produced milk to feed them. 7. Human beings produce too much carbon dioxide which causes the global warming on the earth. 8. According to the text, human beings would disappear in the end. F F T F 从句一律保持陈述语序。 主语从句 同位语从句 表语从句 宾语从句 名词性从句? 　　在句子中起名词作用的句子叫名词从句 (Noun Clauses）。 名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句(Subject Clause)、宾语从句(Object Clause)、表语从句(Predicative Clause) 和同位语从句(Appositive Clause Who will win the match is still unknown. I want to know what he has told you. The fact is that we have lost the game. The news that we won the game is exciting. 主语从句 宾语从句 表语从句 同位语从句 ???????????????????????