Book-3-Unit4-Astronomy-(Reading).ppt

1、Preview,Para. 1 (L.2) the universe began with a “Big Bang” that threw matter in all directions. (L.3) After that, atoms began to form and combine to create stars and other bodies. Para. 2 (L.7) until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. (L.14) Water began t

2、o appear on its surface.,Para.3 (L.21) What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. Para.4 (L.35) Some were insects. Others, called amphibians, were able to live on land as well as in the water.,U

3、nit 4 Astronomy: the science of the stars (Reading),Pre-reading,Where do we come from? Who are our ancestors?,Are they true for the beginning of the life? Do you know what a scientific idea is?,_ separated the sky from the earth.,_ created humans.,_ created the world,Pangu,Nvwa,God,盘古开天,女娲造人,上帝创世说,S

4、olar system,How many planets are there in the solar system?,Is there life on other planets? Why?,How Life Began on the Earth,How,life began,?,Reading,on the earth,Words and expressions:,universe (n.) 宇宙 violent (adj.) 猛烈的 (n.) violence solid (adj.) 实心的，固体的 (a golbe) explode (vt. Only if we care will we help; Only if we help shall all be saved. Jane Goodall,唯有了解，我们才会关心 ； 唯有关心，我们才会行动； 唯有行动，生命才会有希望。 珍妮古道尔,Homework 1. Review the important words & phrases of the reading text 2. Do related exercise of the exercise book 3. Underline what you dont understand in the text,W