(共13张PPT)
Part 3
Warming up and
Pre-reading
True (T) or false (F):
1. Clone can be from both natural clone and man—made clone.( )
2. The sheep, named Kitty;was the first successful clone of a mammal .( )
3. Only strawberries and cactus(仙人掌)are natural clones.( )
T
F
F
4. Since Dolly, researchers have cloned a number of large and small animals including goats, cows, mice, pigs, cats, rabbits and dogs.( )
5. A parent can clone a child who is dying of an incurable illness.( )
T
F
Based on what we know now, you cannot clone animals that have been extinct longer than 10,000 years.
根据我们的了解,你不可能克隆灭绝超过10,000年的动物。(P 15)
[句型]Based on what sb. knows now,… 根据某人现在所知,……
⑴ 根据我们现在所知,到目前为止科学家还不能准确地预测地震的发生。
Based on what we know now, scientists cannot predict the occurrence of earthquake accurately yet.
Based on what we know now, human beings can move to the Mars in the future.
[仿写]
⑵ 根据我们现在所知,将来人类可以移居到火星。
某物与某物不同
2. 某人与某人在……方面意见不同
3. 某物与某物在……方面不同
4. 与某人分享某物
sth. differ from sth.
sb. differ from/with sb. on/upon/about sth.
sth. and sth. differ in sth.
share sth. with sb.
一、短语互译 根据提示写出对应的英文或中文。
5. 查询;找到
6. gain benefits from
7. natural clones
8. man’made
人造的
find out
从……获益
自然克隆
二、单词拼写
1. Can you accept a _________(克隆)pet?
2. I have to _________(不同)with you on this matter.
3. _____________(草莓)are now out of season.
4. This is a ___________(人造的)leather belt.
man-made
cloned
differ
Strawberries
Although they1__________in character with each other, it does not make much 2_______ to their friendship. In daily life, they behave 3__________. All the people think that they are 4____________ from each other.
三、选词填空 选用方框内的单词填空。
differ;different;difference;differently
differ
different
difference
differently
四、语法填空
Cloning is 1____ way of making an exact copy of another animal or plant. It has two major uses. Firstly, it is used to produce 2___________ (commerce) quantities of plants. Secondly, it is 3 ________(value)
for research on new plant species and for medical research on animals. Cloning plants is straightforward 4 ______ cloning animals is very complicated. It is a hard task 5____________(undertake).
a
commercial
valuable
while
to undertake
Many attempts to clone mammals 6______ (failure). But finally the determination and patience of the scientists paid 7____ with a breakthrough—the cloning of Dolly the sheep. At first, the fact 8 _____ Dolly the sheep seemed to develop normally was very encouraging.
failed
off
that
Then came the disturbing news 9 _____ Dolly had become seriously ill. Cloning scientists were cast down to find that Dolly’s illnesses were more appropriate to a much older animal. All scientists had doubts 10 ________it would be a major difficulty for all cloned animals.
whether
that
THANKS!