八年级英语冀教版下册_Unit3_Lesson17_精品学案

Lesson17 精品学案
学习目标：
1. Remember the important words and useful expressions:
century, courage, brave, reason, at the beginning of, food chain, in balance, as well 2.Master the important sentences:
(1) The volunteers hope to save the tigers of the world.
(2) The number of tigers in the wild was around 10000.
(3) Tigers have been in the danger of disappearing.
【独立学习，初步建构】
1. 世纪______________
2. bravely_____________(形容词)
3. reason ______________(复数)
4.appear_____________(反义词)
5. 拯救老虎_____________________
6. 砍倒__________________
7. 食物链_______________________ 8.最近几年______________
9. 在^顶部_______________________ 10….的象征______________
【协作学习，步步攀升】
1.The number of tigers in the wild was around 100,000.
野生老虎的数量大约是10万。

the number of ……的数量，做主语时谓语动词用单数；a (large) number of 许多……（修饰可数名词复数，many）做主语时谓语动词用复数。

A large number of students like doing sports
The number of students in my school is 2000
2. These volunteers hope to save the tigers of the world.
这些志愿者希望拯救全世界的老虎。

hope v.希望
hope+that从句
I hope that you can come soon.
hope to do sth. 希望做……
I hope to be a doctor.
I hope so. 我希望如此。

；I hope not.我不希望这样。

【效果评价，意义建构】
一、根据句意及汉语提示完成句子
1. Today there are no more than 3200 wild tigers, down from 100000 a ____(世纪) ago .
2. The teacher, Yang Xiangming, showed great (勇气) to jump into the river to save the boy.
3. He was a strong, (勇敢的) young man.
4. When they open the door of their house they (消失).
5. The number of the tigers is (减少).
6．His parents were born in the 80’s of the 2oth c .
7. I didn’t have the c to destroy the letter.
8. We k time by chatting with our friends on the Internet during the night.
9. He didn’t tell us the r for being late.
10. The tigers were b in many stories.
二、用所给词的适当形式填空
1. People hate the (kill) who killed the baby.
2. He goes there (enjoy) the fresh air.
3. The number of the people in our company (be) more than 50.
4. We both hope (see) each other next time.。