资料简介
Unit 3 Animals Are Our Friends
Lesson 17
Ⅰ. 根据汉语提示写出下列单词或短语
1. 世纪 n. _______
2. (兽类的)毛 n. ___
3. 标志; 象征 n. _______
4. 勇气; 胆量 n. _______
century
fur
symbol
courage
5. 勇敢的; 无畏的 adj. _____
6. 链子; 链条 n. _____
7. 原因; 动机; 理由 n. ______
8. 消失; 失踪 v. _________
9. 杀死 v. ___
10. 砍; 剪; 切; 割 v. ___
brave
chain
reason
disappear
kill
cut
11. 使……变小; 减少 v. ________
12. 下降到 _______
13. 还; 也 ______
decrease
drop to
as well
Ⅱ. 根据汉语提示完成下列句子
1. 在二十世纪初期, 野生老虎的数量大约是十万。
___ ___ _________ __the 20th century, ___ _______ __
tigers in the wild was around 100 000.
2. 老虎在食物链的顶端。
The tiger is __ ___ ___ __the ____ _____.
At the beginning of the number of
at the top of food chain
3. 它可以帮助保持其他野生动物的数量平衡。
It _____ _____the number of other wild animals __
_______.
4. 人们也砍伐了许多树。
People have ___ _____a lot of trees as well.
helps keep in
balance
cut down
5. 最近几年, 老虎已经面临着消失的危险了。
In recent years, tigers _____ _____ __ _______ __
disappearing.
have been in danger of
Ⅲ. Read the dialogue and answer the questions
1. How many tigers are there in the wild today?
______________________________________
2. What is the reason tigers are important to the
environment?
_____________________________________________
_______________________________________
The number has dropped to a few thousand.
The tiger is at the top of the food chain. It helps keep
the number of other wild animals in balance.
3. Why do people hunt and kill tigers?
______________________________________
4. Aside from their being hunted and killed, what is
another reason tigers are disappearing?
______________________________________________
_____________________________
Some people hunt and kill tigers for money.
disappear, tigers lose their homes.
People have cut down a lot of trees as well. As forests
要点1 at the beginning of 在……开始
Step 1难点·探
(1)at the beginning of后常接什么词?
(2)beginning可构成哪些短语?
Step 2语境·悟
*At the beginning of the 20th century, the number of
tigers in the wild was around 100 000.
在20世纪初, 野生老虎的数量是十万。(P42)
*At the beginning of the class, Miss Wang told a story.
开始上课时, 王老师讲了一个故事。
Step 3知识·得
at the beginning of意思是“在……之初, 最初”, 强调
开始的时间, 其后常接表示时间、事件或其他意义的
名词。同义短语是at the start of。 其反义短语是 at
the end of. . . 意为“在……的结尾/末端”。
【拓展】beginning的其他短语
Step 4考点·练
①今年年初我们学校建立了一个新的实验室。
A new club was built in our school __ ___ _________
__this year.
②吉姆从一开始就在公共汽车上。
Jim was on the bus _____ ___ _________.
at the beginning
of
from the beginning
要点2 the number of. . . ……的数量
Step 1难点·探
(1)the number of做主语谓语动词用什么形式?
(2)the number of和 a number of 有什么区别?
Step 2语境·悟
*At the beginning of the 20th century, the number of
tigers in the wild was around 100 000.
在二十世纪初期, 野生老虎的数量大约是十万。(P42)
*A number of students are playing on the playground.
许多学生正在操场上玩。
Step 3知识·得
the number of
意为“……的数量”, 后接可数名
词
复数, 但中心词是number, 作主语
时, 谓语动词要用_____形式
a number of
量词短语, 意为“许多; 大量”, 后
接_____名词。在句中作主语时,
谓语动词用_____形式。number
前面还可以用large, small来修饰
单数
复数
复数
Step 4考点·练
( )①A number of visitors _____visiting the West
Lake and the number of the visitors _____increasing.
A. are, is B. is, are
C. are, are D. is, is
A
②共享单车的使用人数今年有望达到五千万。
____ _______ __shared bike users is expected to reach
50 million this year.
The number of
要点3 cut down 砍伐
Step 1难点·探
(1)cut down宾语为代词时放在什么位置?
(2)cut相关短语有哪些?
Step 2语境·悟
*People have cut down a lot of trees as well.
人们还砍伐了许多树木。(P42)
*The zoo keeper cut down some bamboo to feed the
pandas. 动物园饲养员砍了些竹子去喂熊猫。
*She wants to cut the pocket money down to 50 yuan.
她想把零花钱降到50元。
Step 3知识·得
(1)cut down意为“砍倒”, 为动副短语。当宾语为代词时
必须放在cut和down_____, 当宾语为名词时, 放在down
前后均可。
(2)cut down 还可以表示“(尺寸上或者数量上)削减, 缩
小”, 也可以与to或者on连用。
之间
【拓展】与cut 有关的常用短语有:
Step 4考点·练
①人类砍伐树木, 因此动物处于极大的危险之中。
People ___ _____many trees, so animals are in great
danger.
cut down
( )②(2018·安顺中考)I think young phubbers(低
头族)are supposed to _____the time they spend _____
their smart phones.
A. cut off; in B. cut down; on
C. cut up; on D. cut in; in
B
( )③(2018·连云港中考)—I’m sorry to _____on
you, but there are one or two things I don’t understand.
—It doesn’t matter.
A. cut down B. cut out C. cut in D. cut off
C
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