(
课件网) Unit 4 Astronomy: the science of the stars How life began on the earth (language points) The earth was just a cloud of _____ after the “Big Bang”. The earth _____ loudly with fire and rock. They were _____ to produce many things, which were to make the earth’s atmosphere. As the earth cooled down, water began to appear on its surface. It allowed the earth to dissolve _____ gases. Then life began to develop. Review the main idea of the text: dust exploded in time harmful Small plants _____ and filled the first oceans and seas with oxygen. This encouraged the _____ of early shellfish and fish. Land animals such as insects, reptiles and dinosaurs appeared after green plants appeared. Small clever animals _____ all over the earth. They are putting _____ carbon dioxide into the atmosphere, which _____ heat from the earth into space. Whether life will continue on the earth for millions of years to come will _____ whether this problem can be solved. multiplied development spread too much prevents depend on 请从课文中找出以下词汇和短语 1 在太阳系中_____ 2 八大行星 _____ 3 生命的起源_____ 4 宗教与文化_____ 5 一个广泛认可的理论_____ 6 生命的演变_____ in the solar system eight planests the origin of life religion and culture a widely accepted theory the development of life 8 水的持续存在_____ 9 一联串的反应_____ 10 在水的表面 _____ 11 绿色植物 _____ 12 陆地动物 _____ 13 二氧化碳 _____ 14 由于、、、的原因_____ 15全球变暧 _____ the continued presence of water a chain reaction on the surface of the water green plants land animals carbon dioxide as a result of global warming 比较Ved和Ving作定语的区别 a widely accepted theory一个广泛认可的理论 the continued presence of water水的持续存在 a developing country a waiting room a coming exam 发展中国家 候车室 即将到来的考试 请选择正确的词汇填空 a _____ boy a _____ cup an _____ match _____ leaves a _____ bird _____ air and water the _____ sun broken running fallen exciting polluted rising flying running broken exciting fallen flying polluted rising 比较as a result, as a result of…的区别 He was late as a result of the snow. he defeated all competitors and as a result, he won the scholarship. as a result of 表原因=because of as a result, 表结果 He worked hard at his study. _____he passed the exam easily. _____his hard work, he passed the exam easily. As a result, As a result of 1 However, according to a widely accepted theory, the universe began with a “Big Bang”. begin with: 起源于…;开始(做)… （译中）The English alphabet begins with “A” and ends with “Z”. (water , little drops of ,the first oceans, begin with ) The first oceans began with little drops of water. (译英)海洋最初是由小水珠组成的. 比较begin with, start with, end with, end in, to begin/start with,的区别 A thousand li journey _____the first step. They _____ the play _____ a song. Their long struggle _____failure. _____, he had no money, but later he became very rich. starts/beg ... ...
