英语人教版八年级下册unit 7 period one.ppt

Unit 7 Whats the highest mountain in the world?Section APeriod 1What is your favorite subject?Can you guess what my favorite subject is?What can we learn in a geography class?geographymountaindesertriverlakeseasalt lakefresh lakeWhat is the highest mountain in the world?Do you know?Do you know how high it is?It is 8,844.43 meters high.What is the biggest desert in the world?The Sahara.Do you know how big it is?It is 9,600,000 square kilometers in size.What is the longest river in the world?The Nile.Qomolangma about 9,600,000 square kilometers in sizeThe Sahara 1,025 meters deepThe Caspian Sea 6,671 kilometers longThe Nile 8,844.43 meters high 1a.Match the facts you know.Can you read the numbers?2 7 10 1215 20 34 5789 100 112 200nine point six millionone thousand and twenty-fivesix thousand,six hundred and seventy-oneeight thousand eight hundred and forty-four point four three9,600,0001,0256,6718,844.43Use the information in 1b to make conversationsA:What is the highest mountain in the world?B:Qomolangma.1)A:What is the biggest desert in the world?B:The Sahara.2)A:What is the deepest salt lake in the world?B:The Caspian sea.3)A:What is the longest river in the world?B:The Nile.1.Qomolangma is_ than any other mountain in the world.2.The Sahara is _ desert in the world.3.The Caspian Sea is _ of all the salt lakes.4.The Nile is _ river in the world.1b.Listen and complete the sentences.higherthe biggestthe deepestthe longestThe Comparative Superlative Degrees of Adjectives&Adverbs复习 形容词和副词形容词和副词比较级和最高级比较级和最高级大多数形容词和副词有三个等级：大多数形容词和副词有三个等级：原级、比较级、最高级原级、比较级、最高级。形容词比较级和最高级的构成形容词比较级和最高级的构成 1.1.构成的规则变化构成的规则变化:2.2.构成的不规则变化构成的不规则变化:short-shortersmall-smallernicenicersafesafer-bigthinheavyheavierhappyhappierbigbiggerthinthinnerdelicious more delicious interesting more interesting important more important carefully-more carefully quickly-more quickly slowly-more slowlyeasily-more easily根据所给词的适当形式填空根据所给词的适当形式填空1.Lily gets up _(early)than Lucy.2.Which goes _(slowly),Tom or Jim?3.This book is _(interesting)than that one.4.She works _(careful)inher school.5.Who goes to bed _(late)Jim,Tom or Jack?6.I think turkey is _(delicious)of all.