1、unit 7 section a(1a-2c)whats the highest mountain in the world？-嗯？Teaching Aims，To learn To compare facts To learn To express large numbers To learn To talk about geography and nature To learn new wordsDesert、population、Asia、tour、tourist、wall、ancient、protect、wide、presentation、the Nile is the longest

2、 river in the world . its more than 6600 kilometers long . it runs through 9 countries .the Nile，The Caspian The Caspian sea is The biggest lake in The world . it lies in The border between Asia and Europe，The Sahara is The biggest lake、1.9，600，000 million thousand 2。長(zhǎng)、寬、高表達(dá)B : its 8，844 meters high

3、。practice，the biggest desert in the world is about 8，000，000 square kilometers in size。Its about 8，000，000 square kilometers in size。emphasize、1。比較級(jí)than any other n(可數(shù)名詞單數(shù))2。同類(lèi)比較用of；范圍比in更一般。The Caspian sea is The deepest Of all The salt lakes . The Sahara is The biggest desert in The world . The Ni

4、le is _ _ _ _ Of The adj，2a listen again and fill in the blanks in 2a with the numbers in the box。6 464 300，_ _ _ the Yangtze river is about _ _ _ _ _ _ kilometers long and the yellow river is ，5，000，300，make conversations using the information in 2a，a 3360 did you know the B : yes，I did。its much ol

5、der than my country。exercises，The great Wall of China is _ _ _ _ _(long)Wall in The world . 2 . The Caspian sea is deeper than _ _its one of the _ _ _ _ _ things in the world to stay with friennt。a . worst b . happiest c . busiest d . hardest 5。he is taller than any other student in his class。(同義詞)he is _ _ 2。the superlative of the adjectives。(形容詞的最高級(jí))(1)用比較級(jí)表示最高級(jí)。比較級(jí)than any other n(可加名詞單數(shù))(2)用于同類(lèi)比較的of；范圍