Unit 4《Astronomy the science of the stars》Grammar-课件18(30张PPT)(人教版必修3)

Try to start it with:
1. Complete the sentence on your card. 2. Discuss with your partners in your group and then choose one sentence that you all think is the best.
fundamental Is the moon a planet ? This question is ______________if students are to show that they understand the nature of astronomy __________. Some scientists think that the earth gave birth to ______________ the moon because the moon circles our existed planet. Others believe that the moon _______ before the earth was formed. They think that earlier in time it travelled through space as a small planet which was caught As a result by the earth’s gravity. __________, it goes around our planet. The evidence for this theory is that the atoms that _____ make up the rocks on the moon seem to be different from those on earth. What is clear is that the moon is smaller prevents from than the earth and this _________ it _______ escaping from puzzle the earth. Although its origin may still be a ________, the moon can never be anything more than a satellite of the earth.
What is the reason for the generation gap? The reason is that…
That is why there is a generation gap between parents and children.
Try to say something to your mothers.
1. _____ we need more practice is quite obvious. A. What B. That C. When D. / 2. _______ they can solve the question is still unknown. A. If B. Which C. Whether D. What 3. _____ he said at the meeting astonished everybody. A. Why B. What C. That D. Who 4. ____ is a fact that English is accepted as an international language. A. There B. This C. That D. It
I want to tell you:
3. My dream is that one day there will be no generation gap between our mums and us.
1. I think “mother” is an important word to learn and that “mother” is an important object clause 宾语从句 person to love. 2. It is necessary that we should love our mothers, respect them and take care of them in future. subject clause 主语从句 3. My dream is that one day there is no generation gap between our mums and us. predicative clause 表语从句
I want to tell you:
1. I think “mother” is an important word to learn andrson to love.
I want to tell you:
2. It is necessary that we should love our mothers, respect them and take care of them in future.
What is the reason for the generation gap? generation gap
The reason is that my mother is too busy to talk with me. ___________________________________ she can’t understand me. ____________________________ my mother doesn’t like to accept new things. ____________________________ I can’t understand my mother either. ____________________________ (more reasons)
Practice:(p29)
2. Do the other astronomers accept his ideas? It remains a question. Whether ______________________________ other astronomers accept his ideas ________________________ remains a question.
For all these, we should give thanks to our mothers ---because they give us our lives!
I think _________ I wonder___________ I feel ___________ I’m sure ___________
成分
主语
宾语
状语 when where how why
不作成分 that (陈述句） 陈述句） 陈述句 whether 疑问句） （疑问句）
what what 连接词 who whom which which
the usual construction:
It is + adj./ n. + subject-clause
Complete the following passage with the words and phrases below in the correct form.(p28) astronomy 天文学 atom 原子 fundamental 基础的 puzzle 谜, 迷惑 exist 存在,生存 存在 生存 阻止,制止 prevent…from 阻止 制止 as a result 结果 产生,分娩 give birth to 产生 分娩
4. Why is the earth becoming warmer? It is an important topic for research. Why the earth is becoming warmer is an __________________________________ important topic for research. __________________________________ 5. Stephen Hawking at 65 experienced zero gravity during a flight. It amazed everybody. It amazed everybody that Stephen Hawking _____________________ _______________________________________ at 65 experienced zero gravity during a flight.
fundamental Is the moon a planet ? This question is ______________if students are to show that they understand the nature of astronomy __________. Some scientists think that the earth gave birth to ______________ the moon because the moon circles our existed planet. Others believe that the moon _______ before the earth was formed. They think that earlier in time it travelled through space as a small planet which was caught As a result by the earth’s gravity. __________, it goes around our planet. The evidence for this theory is that the atoms that _____ make up the rocks on the moon seem to be different from those on earth. What is clear is that the moon is smaller prevents from than the earth and this _________ it _______ escaping from puzzle the earth. Although its origin may still be a ________, the moon can never be anything more than a satellite of the earth.