Unit 4 Astronomy: the science of the stars(Period 5 Using language: Extensive reading)
許多英雄埋葬在教堂的墓地里。
break out: (of violent events) start suddenly（指激烈事件, 如戰爭、火災、疫情等）突然發生; 爆發
fire broke out during the night.
夜間突然發生了火災。
war broke out in 1939.
戰爭爆發于1939年。
a quarrel broke out suddenly at midnight.
在深夜, 突然有人吵架。
→step 5 reading task
turn to page 66.
1. ask students to read the passage and answer the two questions.
1) can a black hole be seen? how do you know it’s a black hole?
2) what happened to the spaceship from the beginning to the end?
suggested answers:
1) no, it can’t be seen. you can see things disappear into what appears to be empty space.
2) at first the lights on the spaceship went out and the computer stopped working. then the spaceship jumped and began to move around the edge of the outside of the hole.
as the spaceship moved around the hole, it began to go faster and faster.
but then the spaceship jumped again, and it moved sideways from the black hole. it began to increase its speed until it seemed to be going as fast as light.
at last the spaceship slowed down and the computer started working again.
2. let students read the passage again and do the following:
suppose you are a scientist reading this passage. use this checklist to discover the new ideas about “black holes”. then write them for the other scientists to read about.
old ideas about “black holes” was this what we found? new ideas about “black holes”
1. black holes cannot be seen.
2. gravity pulls objects towards them.
3. objects go round outside the edge of the “black hole”.
4. all objects must go into the “black hole” when they are caught by its gravity.
3. several minutes later, show the answers on the screen and check them with the whole class. at the same time, deal with any difficult language points that students can’t understand.
suggested answers:
old ideas about “black holes” was this what we found? new ideas about “black holes”
1. black holes cannot be seen. yes
2. gravity pulls objects towards them. yes
3. objects go round outside the edge of the “black hole”. yes
4. all objects must go into the “black hole” when they are caught by its gravity. yes they can be thrown far from the “black hole” by the energy in the “black hole”.
→step 6 consolidation
ask students to go back to the two passages. give them several minutes to be prepared to retell the whole story in their own words. then ask as many students as possible to come to the front to tell the story.