Lesson 17 Save the Tigers导学案（1课时）

Lesson 17: Save the Tigers
●课时重点:
1.掌握单词:century, fur, ( http: / / www.21cnjy.com ) courage, brave, chain, balance, reason, disappear, kill, cut, decrease。会运用本课的重点短语和句型。
2.通过本课的学习,知道怎样找每个段落的中心句。
一、填一填
1.at the beginning of 　在……之初　　　　　2.the number of 　……的数量 　　　
3.drop to 　下降到;跌至 4.food chain 　食物链
5.保持平衡 　in balance 6.处于危险状态 　in danger
7.(除某事或某人外)还;也 　as well 8.砍倒;减少 　cut down
二、译一译
1.但是现在数量已经下降到几千。
But today that number has dropped to a few thousand.
2.老虎是力量和勇气的标志。
Tigers are symbols of strength and courage.
3.老虎在食物链的顶端。
The tiger is at the top of the food chain.
4.近些年来,老虎已经处于濒临灭绝的状态。
In recent years, tigers have been in danger of disappearing.
5.人们也砍伐了许多树。
As well, people have cut down a lot of trees.
三、想一想
1.文中提到的“Save the tigers” 是什么
Save the tigers is a ( http: / / www.21cnjy.com ) group of volunteers. These volunteers hope to save the tigers of the world.
2.近些年来,老虎为什么处于濒临灭绝的状态中
Some people hunt and ( http: / / www.21cnjy.com ) kill tigers from money. As well, people have cut down a lot of trees, tigers lose their homes.
3.在句子“In rece ( http: / / www.21cnjy.com )nt years, tigers have been in danger of disappearing.”中,我们学到了in danger的用法。举一反三,你能用这个短语造句吗
He is in danger now.
活动一
1.听课文录音,回答下面的问题。
(1)Where do tigers live
They live in the forests of Asia.
(2)What is at the top of the food chain
The tiger.
(3)Why do some people hunt and kill tigers
They hunt and kill tigers for money.
2.阅读课文,完成课文后的第一题。从所给的选项中选出每个段落的中心意思。
活动二
1.小组活动,再次阅读课文,找出支持每个段落中心意思的句子。完成课文后的第二题,并在班上核对答案。
2.每小组就每个段落的相关信息进行问答练习,以巩固所学知识。
完成任务所需的语言结构:
A:What do these volunteers hope to do
B:They hope to save the tigers of the world.
A:What was the numb ( http: / / www.21cnjy.com )er of tiger in the wild at the beginning of the 20th century
B:Around 100,000.
...
活动三
讨论保护动物的方法,完成课文后的第三题,最后把想法写在下面的表格里。
Name Ways to protect animals
知识超市
●At the beginning ( http: / / www.21cnjy.com ) of the 20th century, the number of tiger in the wild was around 100 000.
the number of 意为“ ( http: / / www.21cnjy.com )……的数量”,后接名词复数。这个短语作主语时,谓语动词用单数形式。例如:The number of students is 2000.
a number of 意为“许多;很多”, ( http: / / www.21cnjy.com )相当于a lot of, 后接名词复数。这个短语作主语时,谓语动词用复数形式。例如:A number of students are playing.
做一做:单项选择。
(D)1.The numb ( http: / / www.21cnjy.com )er of people invited 　　　　more than 200, and a number of them 　　　　been here now.
A.were; has　　　B.were; have　　　C.was; has　　　D.was; have
(A)2.A number of boys 　　　　playing computer games now.
A.are B.is C.likes D.was
●As well, people have cut down a lot of trees.
as well 意为“ ( http: / / www.21cnjy.com )也;还”,与too, also, as well同义。as well常用于句中或者句末。too一般放在句尾,可用逗号和前面的句子隔开,也可不用。also大多放在be动词、助动词、情态动词之后,实义动词之前。either常用于否定句句尾。
做一做:单项选择。
(C)1.They go to the zoo 　　　　.
A.either B.also C.as well D.as well as
(B)2.I don t like to play the piano　　　　.
A.too B.either C.as well D.also
见《导学测评》P18