Unit1 The Developing World Topic2 What has happened to the population? Section C

Unit1 Topic2 Section C ( 总(13) ~(14) 课时 )
班级 ---------------- 姓名 ------------------
一·自学 自学---质疑---解疑
（一）学习目标：
1、继续学习现在完成时。
2、探讨人口过密会导致的一系列问题，警戒我们要重视人口问题。
（二） 自学方法：
1、预习P13~14的生词和短语。
2、大声朗读1a，注意找出使用现在完成时态的句子和人口过密带来的问题。
二·量学 自测---互查---互教
翻译下列短语
1、世界上大约五分之一的人口
2、为了控制人口增长采取很多措施
3、be short of energy and water
4、work well in sth./ doing sth.
5、solve the population problem successfully
6、deal with
三·示学 展示---反馈---导学
1…about one fifth of the people in the word live in China.
世界上大约有五分之一的人生活在中国。
One fifth是分数。英语分数表达法：分子用基数词，分母用序数词，分子大于1，分母用复数。简称“母序子基”。2/3 two thirds 1/2 a(one) half
Three fifths of the students in our class are girls.
在我们班五分之三的学生是女同学。
I ate two thirds of that apple. 我吃了那个苹果的三分之二。
2.We are short of energy and water.
be short of 缺乏，短缺
She is always short of money`.
[拓展] be short for 是…的缩写
TV is short for television.
For short 简称，缩写
You can call hin Bob for short..
3 It has worked well in controlling China’s population.
他在控制 中国人口数量方面取得了显著的功效。
Work well in sth /doing sth 表示‘在某方面起明显的作用。’如：
Ding eye exercises works well in protecting our eyesight.
做眼保健操在保护我们的视力方面取得了显著的作用。
4.Read 1a again and finish 1b.
5.听录音完成2a.2b.
四·用学 自测---反馈---点拨
单项选择
（ ）1. —Edison was known ------a great inventor .
A. for B. as C. in D. on
( ) 2. –Don’t worry! We aren’t ------food .
A.for short B.short for C short of D. in short
（ ）3.Li mei _______the maths problems all by herself .
A.works out B. works C. works in D.works on
( )4.Do you know _______of the students in our class hate maths
A.two three B.two thirds C. two third D.second three
( )5.The new policy has_______improving our environment.
A.been good at B.done well in C. been week in D.worked well in
( )6The farmers ____harf of the oranges on the farm so far .
Apicked B have picked Cwere picking D pick
( )7 We are short _____ energy and water because of overpopulation.
A in B of C at D on
( )8 More than _____people live in Asia now.
. A three billions B three billion of C three billion D three billions of
( )9 _____ the population of Beijing
A how much is B What’s B How many is D What is the number
( )10 The temperature in the day-time is higher than _____at night .
A it B one C that D those
五·测学 巩固---运用---拓展
根据汉语或首字母提示完成句子。
1.____ ______(迄今为止)，no one has broken his record.
2.What problems will playing with fire_______(导致)
3.We may meet many d_______, but we are sure we can overcome(克服)them.
4.We will _____stronger _____ ______（采取措施）protect our homes .
5The number of students in our school this year has increased by 20 p_____.
六·思学 回顾---总结---反思