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【教学重点】
1．The words and expressions in this lesson.
2．Know about the world's physical features.
【教学难点】
Fractional expression
The sentence of passive tense
【教学准备】
Audiotape, flashcards, a map of the world
【教学过程】
Ⅰ．Review
What have we learned from the last lesson?
Ⅱ．Come to "THINK ABOUT IT".
How many continents are there in the world? What are they?
How many oceans are there in the world? What are they?
There are ________ continents. They are ________, _________, _________, _________, North America, South America and Antarctica. Antarctica is the world's _______ and the world's _______ continent.
There are _______ main oceans. They cover ______ of the worlds' surface. They are________, _______, _______ and the Arctic Ocean. ________ is the biggest ocean. _______ is the smallest ocean.
Ⅲ Procedures
listen to the passage
Read the passage carefully and find out the phrases
指出
总共，总计
到...之前，不迟于
三分之一
三分之二
被...所覆盖
Let students to answer the phrases
指出 point out
总共，总计 in total
到...之前，不迟于 by+时间
三分之一 one third