1、Unit 5 Whats the highest mountain in the world Period 1【课前自学指导】（一）写出下列单词的比较级和最高级。high deep big long old young （二）请根据预习写出下列短语。1、最高的山 _ 2、最长的河 3、九百六十万平方公里 _ 4、 1025米深 5、在全世界 _ 6、其他任何一座山 7、6671米长_8、884443 米高_(三)知识链接1、100以内的数字咱们已经学过，那么100以上呢？100 ：one hundred 102 ：a hundred and two 246 ：two hundred and f
2、orty-six 751： seven hundred and fifty-one 1000以上的数词 1,000 = one thousand 一千 10,000 = ten thousand 一万 100,000 = one hundred thousand 十万 1,000,000 = one million 一百万 10,000,000 = ten million 一千万 100,000,000=one hundred million 一亿 十亿以上的大数，英美有不同的读法： 英国 美国 十亿 one thousand million = one billion 百亿 ten thou
3、sand million = ten billion 千亿 one hundred thousand million = one hundred billion 万亿 one billion = one trillion 1000以上的基数词的表示方法。先从右至左，每三位数加一个逗号。第一个逗号前的数为千（thousand）,第二个逗号前的数为百万（million），第三个逗号前的数为十亿（billion）9,883 nine thousand ,eight hundred and eighty three 65,359 sixty-five thousand, three hundred a
4、nd fifty-nine265,468 two hundred and sixty-five thousand, four hundred and sixty-eight 60,263,150 sixty million, two hundred and sixty-three thousand, one hundred and fifty2、初中英语语法大全中长度、宽度、高度、深度的表示法：(1)、长度、宽度、高度、深度的表示法，有一个专门的结构，那就是“基数词 + 单位词 + 形容词”。例句：Tiger Path is 200 meters long and has a high hum
5、idity.老虎路有200米长，而且湿度很重。We walk up three floors, which is about ten meters high.我们走上三层楼，大概10米左右高。（2）、除了上面的表示方法，有时也可以用“基数词 + 单位词 +in + 长度或者重量的名词”来表示长度、宽度、高度、深度。The classroom was 25 feet in length and 20 feet in width.教室有25英尺长，20英尺宽。注意事项：若表示重量，可以用 in weight 结构。例句：The box is 9 kilos。=The box is 9 kilos
6、in weight。这个箱子重9公斤。long的名词形式是 翻译成 ，high的名词形式 翻译成 ，表达东西的长度可以有两种方法 例如：这条河100米长。The of the river is 100meters. =The river is 3、形容词和副词比较级和最高级的构成规则的1）.一般比较级多在原形上加-er,最高级加-est.e.g. high higher highest2）.辅音字母加y结尾时去y变i再加ere.g. heavy heavier heaviest3）. 以不发音的e结尾时加r/st. eg. fine finer finest4）. 重读闭音节结尾的词,如末尾是
7、一个辅音字母,双写这个辅音字母,再加-er/est.e.g. big bigger biggest5）.多音节词和部分双音节词在词前加more或moste.g. beautiful more beautiful most beautiful不规则的原级比较级最高级goodbetterbestbadworseworstmany/muchmoremostoldolder/elderoldest/eldestlittlelessleast【学习过程】（一）导入并出示学习目标（二）. Learning the new knowledge:1、出示图来学习本节单词Qomolangma, high, me
8、ter, Nile ,square, Caspian ,deep ,Sahara, desert 2、认真完成1a部分,连接你所知道的事实，并能谈论你还了解关于它什么。3、学习大的数字的读法和写法。4、1000以上的基数词的表示方法。【课堂练习】 (一) 单项选择。 ( )1. Its _ in the world .A. the biggest desert B .biggest desert C. the biggest deserts D. bigger desert ( )2. There are no man-made structures as _as the Great Wall
9、 A. bigger B .big C. bigger D. the biggest ( )3. The Nile is 6,470 _A. kilometers B. kilometer C. kilometers long D .kilometer long ( )4. Mount Tai is _ lower than Qomolangma .A .lots of B. many C. very D. much ( )5. Shanghai is one of _ in theworld .A .more big city B .the biggest city C. the bigge
10、st cities D .the most big city 【课后作业】根据第二课时的课前自学指导进行预习；完成节节练。一、英语语法之形容词比较级和最高级练习题（基础题）( )1. This box is_ that one. A. heavy than B. so heavy than C. heavier as D. as heavy as( ) 2. I think the story is not so _ as that one.A. interesting B. interested C. more interesting D. most interesting( )3 .Tom
11、 is stronger than _ in his class.A. any other boy B. any boys C. any boy D. other boy( )4. When spring comes, it gets_.A. warm and warm B. colder and colder C. warmer and warmer D. shorter and shorter( )5. _ students in our class came to like English. A. more and more B. much and much C. many and ma
12、ny D. less and least( )6. When spring comes the days get _ and nights _.A. short; long B. long; short C. longer; shorter D. shorter; longer( )7._ I look at the picture, _ I like it. A. The best; the more B. The more; the less C. The more; less D. More; the more( ) 8.1 I like_ one of the two books. A
13、. the older B. oldest C. the oldest D. older( )9. Which is_ country, China or Japan? A. the large B. the larger C. larger D. largest( )10. Which do you like _, tea or coffee?A. well B. better C. best D. most( )11. Which do you think tastes _, the chicken or the fish?A. good B. better C. best D. well
14、( ) 12 Li Lei is_ student in our class.A. tall B. taller C. tallest D. the tallest( )13. Who is_ of you three?A. the oldest B. much older C. oldest D. older二、根据句意和首字母补全单词。（拔高题）1. The l _river in Asia is the Yangtze River .2. China is one of the oldest c _ in the world .3. One of the o_ countries in
15、the world is China. 4. M _ of city lies three meters blow sea level .5. Our playground is about 2000 s _ meters in size .三、根据首字母提示完成句子。（拓展题）1. we should learn the s of helping others.2. Most animals dont like to live in f_ conditions.3. Many c_ reached the top of the mountain this morning.4. Tibet（西藏）is in the s_ part of China.5. Of all the m_, Qomolangma is the highest and most famous.【课后反思】
