课件15张PPT。 Unit 7 Know Our World
Lesson 38
The World Is a Big Place Can you find the place where you live? Vocabulary planet n. 行星 billion n. 十亿total n. 总计；总数
adj. 总计的increase v. 增加 Vocabularysurface n. 表面；表层Indian adj. 印度的
n. 印度人Atlantic n.& adj. 大西洋（的） Arctic adj. 北极的 Vocabulary十亿；千兆
总计；总的
表面；表层
行星
增加；增大
大西洋（的）
北极的
印度的；印度人planet n.
billion n.
total n.& adj.
increase n.& adj.
surface n.
Indian adj.& n.
Atlantic n.& adj.
Arctic adj. Listen and answer the questions.How many continents and oceans are there in the world?
Can you point them out on the map of the world?AsiaEuropeAfricaAustralia North America South AmericaAntarcticaPacific OceanIndian OceanAtlantic OceanArctic OceanPacific Ocean Read and match each paragraph with its main idea. Paragraph 1: An increasing population is a big problem for the earth. PopulationParagraph 2: People cannot live everywhere on the earth.Can you live everywhere on the earth? we can't live in water.Only about one third of our planet is land.We can’t live everywhere on the earth. Language notes1. in total 总计；合计；总共eg: There are more than 1000 students in our school in total.
我们学校的学生总计达1000多人。Exercise:
I have made 1000 yuan this month.in total2. one third 三分之一； two thirds 三分之二分数构成的记忆口诀：子基母序，分子大于1，分母加S。Exercise:
Come on, we have already done of the work.
A. two-three B. two-third C. two-thirds D. second-threeeg: three fourths 3/4, two fifths 2/5
Note: a half也表示1/2, a quarter表示1/4, three quarters表示3/4 C Language notes1. be covered with… 被……覆盖Passive Voice （被动语态）：
被动语态由“助动词be+及物动词的过去分词”构成。
（be有人称和数的变化）eg: The field so many beautiful flowers.
田野被许多美丽的花儿所覆盖。is covered withExercise:
1. The trees must three times a week.
A. water B. is watering C. be watered D. waters
2. A lot of trees along the river last year.
A. planted B. are planted C. are planting D. were plantedCD Play a game. Play a game HomeworkReview Lesson 38.
2. Write a short passage to talk about our world.
3. Preview Lesson 39. THANK YOU
