英语人教版八年级下册Unit7 第一课时课件.ppt
肖营子初级中学肖营子初级中学 马亮马亮Section A 1a1c学习目标学习目标话题：话题：谈论地理和自然谈论地理和自然重点：重点：1.较较大数字的读法大数字的读法2.形容词和副词的比较级与最高级形容词和副词的比较级与最高级难点：难点：形容词和副词的比较级与最高级形容词和副词的比较级与最高级Have a revision(复习）复习）形容词和副词的比较级和最高级（规则变化）形容词和副词的比较级和最高级（规则变化）单音节词和少数多音节词单音节词和少数多音节词1.一般在词尾加一般在词尾加-er 或或-est 2.以字母以字母e结尾的词，加结尾的词，加-r 或或-st 3.以以“辅音字母辅音字母+y”结尾的双音节词，先改结尾的双音节词，先改“y”为为“i”，再加，再加-er或或-est 4.重读闭音节，单辅音结尾的，双写这个辅重读闭音节，单辅音结尾的，双写这个辅音字母音字母加加-er 或或-est的词：的词：5.多音节词和部分双音节词在词前加多音节词和部分双音节词在词前加more或或mostDo you know these interest places?Lets have a look Qomolangma Qomolangma runs along the border between China and Nepal.It is covered with snow all the year round.Its 8844.43 high,the highest in the world.Its 26 kilometers long.The Nile is the longest river in the world.Its more than 6600 kilometers long.It runs through 9 countries,its one of the largest river flows through the international states in the world and runs into the Mediterranean Sea(地中海地中海)in the end.The NileThe Caspian Sea The Caspian Sea is the biggest lake in the world.It lies in the border between Asia and Europe.The Sahara is the biggest desert in the world.It is located in the northern Africa,climate conditions are very bad,is one of the earths most not suitable for biological survival.The Saharasquare n.平方平方meter n.米米deep adj.深的深的desert n.沙漠沙漠 Can you remember the four new words in one minute？（你能在一分钟内记住这些单词吗？）（你能在一分钟内记住这些单词吗？）square/skwe/平方，正方形平方，正方形meter/mi:t(r)/米，公尺米，公尺deep/di:p/深的，纵深的深的，纵深的desert/dez(r)t/沙漠沙漠Try to read the new words.试着读这些新单词。试着读这些新单词。Ready?Go!Do you know these interest places?Qomolangma is the longest river in the world.Its more than 6The Nile600 kilometers long.It runs through 9 countries.The Caspian Sea The Sahara is the biggest desert in the world.It is in the northern Africa.It is very dry there.1.1025米深米深 1025 meters deep 2.8844.43米高米高 8844.43 meters high 3.6671公里长公里长 6671 kilometers long 4.面积面积 9600000平方米平方米 9600000 square meters in size 5.比其它任何山都高比其它任何山都高 higher than any other mountainCan you read these numbers?(你能读出这些数吗？）你能读出这些数吗？）123 250 3,482 1,025 3,000 6,671 8,844.43 9,600,000thousandmillion thousand1a Match the facts you know.Qomolangma about 9,600,000 square kilometers in sizeThe Sahara1,025 meters deepThe Caspian Sea6,671 kilometers longThe Nile8,844.43 meters high请领读这些请领读这些地名地名。请朗读右边部请朗读右边部分内容。分内容。Talk about your answers。is请朗读这些句子，注意 square,in size,deep,long,high的表达。8,844 meters high.8,844米高米高 meters high(long,wide)米高（长，宽米高（长，宽)。英语表示英语表示“有多长（宽，高有多长（宽，高）”时，时，一般一般将数词和数量单位放在表示长宽高的将数词和数量单位放在表示长宽高的形容词前作状语形容词前作状语。e.g.The wall is 1.7 metres wide.Can you make sentences like that?（你能用所给的词造出那样的句子吗？）（你能用所给的词造出那样的句子吗？）例如：例如：the well(井）井）/5m/deep The well is 5 meters deep.1.that mountain/320m/high 2.this tree/15m/tall 1b Listen and complete the sentences.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.higherthe biggestthe deepestthe longestUse the information in 1a and 1b to make conversations，then show us（用（用1a和和1b中中的信息编对话的信息编对话,然后展示。）然后展示。）A:What/Which is the highest mountain in the world?B:Qomolangma.A:How high is it?B:It is 8844.43 meters high.请用这些地名和形容词：Qomolangma the Sahara （biggest)The Caspian Sea(deepest)the Nile(longest)HomeworkPlease remember the important phrases and preview the next lesson
