人教版高中英语必修三unit4 astronomy the science of the stars Learning about language课件（共19张）

(共19张PPT)
Unit 4 Astronomy the science of the stars
Learning
about
language
Use the correct prefix or suffix for each word. Write out the new word and explain the difference between the two.
Discovering useful words
and expressions
-(en)ce
present certain
violent fair
confident paid
different like
patient kind
un-
presence
violence
confidence
difference
patience
uncertain
unfair
unpaid
unlike
unkind

culture art
globe physics
universe chemistry
agriculture biology
mathematics science
-al
-ist
cultural
global
universal
agricultural
mathematical
artist
physicist
chemist
biologist
scientist
Choose the correct word to fill in the each of these blanks.
At the beginning, the earth had no ________.
dust B. atoms
C. water D. matter
2. The development of a planet generally depends on _______ combining together.
atoms B. rocks
C. gases D. water
3. The ______ of mammals happened after the disappearance of the dinosuars.
harmful B. system
C. spread D. method
4. Mammals _____ when the animals that were to them disappeared.
prevent B. multiplied
C. depended D. existed
Complete the following passage with the words and phrases below in the correct form.
astronomy atom fundamental
puzzle exist prevent … from
as a result give birth to
Is the moon a planet? This question is
____________ if students are to show that they understand the nature of __________. Some scientists think that the earth ___________ the moon because the moon circles our planet. Others believe that the moon ______ before the earth was formed.
fundamental
astronomy
gave birth to
existed
They think that earlier in time it travelled through space as a small planet which was caught by the earth’s gravity. __________, it goes around our planet. The evidence for this theory is that the _______ that make up the rocks on the moon seem to be different from those on earth.
As a result
atoms
What is clear is that the moon is smaller than the earth and this ________ it _____ escaping form the earth. Although its origin may still be a _______, the moon can never be anything more than a satellite of the earth.
prevents from
puzzle
In pairs divide these adjectives into two groups: emotional words and calm words.
violent patient gentle angry
rude relaxing kind shocked
excited easy-going calm crazy
Emotional words Calm words

patient gentle
relaxing kind
easy-going calm
violent angry rude shocked excited crazy
I. 根据下列各句句意及所给单词的首字母 或汉语提示, 写出所缺单词的正确形式。
1. _______ (生物学) is the science which is concerned with the study of living things.
2. As you go up a mountain, you have to overcome the earth’s g______ which pulls you down.
课堂练习
Biology
gravity
3. China successfully sent up its first man- made space ________ (人造卫星) on April 24, 1970.
4. The policemen were sent to find the black box because it showed why the plane had ________ (坠毁).
5. The United Nations World Food Program says potatoes can grow in almost any ________ (气候).
satellite
crashed
climate
II. 用所给词的适当形式填空。
1. ________ (culture) exchanges are a way of building bridges between nations.
2. A _________ (physics) is a person who studies physics or whose job is connected with physics.
3. It is ______ (fair) that he gets very little in reward for his hard work.
Cultural
physicist
unfair
4. If one loses __________ (confident), he can never be expected to do his work well.
5. There was a slight wind that ______ (gentle) moved the leaves on the trees.
confidence
gently
Homework
Finish Using Words and Expressions on Page 63 of the Workbook.
Thank you!