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(4)The earth is our home now,and it will be our home in the future.
Read the text in groups and pay attention to these sentences.
Listen to the tape with your book closed and fill in the blanks.
1.In 2010,the world’s population was .
2.People can’t live on the earth.
3.Oceans cover of the earth’s surface.
over 7 billion in total
everywhere
two thirds
Read the text and answer the following questions.
(1)What may the population be in the year of 2050?
(2)Which ocean is the largest?
The world’s population will reach 9 billion.
The Pacific Ocean.
Read the text again and fill in the blanks.
(1)There are seven .
(2)We can’t live in water, and only about
our planet is land.
(3)It’s not easy to those places.
(4)It must for our children and for our children’s children, too!
continents
one third of
live in
be treated well
☆教材解读☆
1.In the year 2010,the world’s population was over 7 billion in total.
total 作名词,意思是“总计”。in total意思是“总共”,和in all 同义。
The ruler is 1 yuan and the pen is 10 yuan,so the total is 11 yuan.尺子1元钱,钢笔10元钱,所以一共是11元钱。
My family members are 20 people in total.我家家庭成员共有20人。
【拓展】 total 还可以作形容词,一般用在名词的前面作定语,表示“总共的,完全的”,副词形式是totally。