优秀备选课件thescienceofstars语言点幻灯片.pptVIP

* * * * * * * * * * * * * * * * * * * * * * Unit 4 Astronomy: the science of the stars Retell the story. Time What happened Big Bang ______ began to form and combine to create stars and other bodies. Atoms 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 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 1.violent (adj.) 猛烈的；激烈的； 猛烈的进攻 极其的厌恶 极度痛苦 (adv.) 猛烈地；激烈地； (n.) 猛烈；激烈；暴力； 船在海上强烈的风暴中沉没。 The boat sank in a ______ ______ at sea. violent storm violently a violent attack violent dislike violent pain violence 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 ocean