初中英语人教新目标 (Go for it) 版八年级下册Section B多媒体教学课件ppt

这是一份初中英语人教新目标 (Go for it) 版八年级下册Section B多媒体教学课件ppt，共32页。PPT课件主要包含了对于鲸鱼你知道多少，火眼精金，Self check，重点回顾，最高级的句子结构，活学活用等内容，欢迎下载使用。
Unit 7What's the highest muntain in the wrld?
Sectin B 3a-Self-check
D yu knw the whale?Please watch the vedi!
鲸的体型是世界上存在的动物中最大的，鲸是终生生活在水中的哺乳动物，对水的依赖程度很大，以致它们一旦离开了水便无法生活，鲸形状像鱼，鼻孔在头的上部，用肺呼吸。体长可达三十米，是现在世界上最大的动物。
鲸为适应水中生活，减少阻力，它们的后肢消失，前肢变成划水的浆板。身体成为流线型，酷似鱼。因而它们的潜水能力很强，小型齿鲸可潜至100-300米的水深处，停留4-5分钟，长须鲸可在水下300-500米处待上1小时，最大的齿鲸--抹香鲸能潜至千米以下，并在水中持续2小时之久。
学习目标1.熟练掌握单词huge,prtect的用法.2.能够熟练掌握形容词或副词的比较级和最高级.3.能运用所学的知识写一篇有关保护珍稀动物和大自然的作文.
自主学习一（3min） 内容：3a 时间：3min 要求：大声朗读表格中的句子根据描 述内容分类。
Read the fllwing wrds and phrases abut whales. Put them in the crrect place in the chart.
1. Humans catch whales fr meat, fat and il 2. Eat small fish and ther sea life3. Jump high ut f the water4. Rules n whale prtectin5. Huge6. Water pllutin
1.big最通俗、常用,强调比正常程度、范围及规模的标准大,常用于修饰人、物或数量。反义词是little和small。2.huge强调尺寸、体积”庞大”,容量和数量”巨大”。指体积时,比large所指的体积大,但不强调重量。3.large强调远远超过标准的”大”,可指”数量、容量、体积和面积的大”,比big正式,反义词是small。
7. Live in the sea8. Sme kinds have teeth9. Learn mre abut whales10. Stp putting rubbish int the sea11. Sing sngs12. Whale parts sld t make things likes candles and sap
自主学习二：(5min) 运用3a的信息及3b给出的句子提示，写一篇保护鲸鱼的文章
Write a paragraph abut whales and why they need t be prtected. Use the infrmatin in 3a. Then make a pster.
Whales are... They live in ... They They can interesting fact is Anther interesting fact is ... Sme kinds s whales are in danger , because shuld prtect whales frm I think peple shuld/ shuldn'
保护 免受 sunglasses can prtect yur eyes frm the sun.
Whales are huge animals. They live in the sea. They eat small fish and ther sea life. One interesting fact is jumping high ut f water Anther interesting fact is they can sing sngs Sme kinds f whales are in danger because humans catch them fr meat, fat and shuld prtect whales frm water pllutin. I think peple shuld stp putting rubbish int the sea, make rules n whales prtectin and learn mre abut whales.
clever--cleverer--cleverest nice--nicer--nicest easy--easier--easiest fat--fatter--fattest thin--thinner--thinnestbeautiful--mre beautiful--the mst beautiful careful--mre careful--the mst carefulgd/well--better--bestbad--wrse--wrst many/much--mre--mst
仔细观察，试着总结规律！
规则变化 1) 一般情况下，单音节或双音节的形容词/副词比较级＋er， 最高级＋est。如:clever — cleverer — cleverest few — fewer — fewest small — smaller — smallest 等。
形容词、副词的比较级和最高级规则变化和不规则变化
2) 以e结尾的词，比较级＋r，最高级＋st 即可。 如：nice — nicer — nicest cute — cuter — cutest large — larger — largest 3) 以辅音字母＋y结尾的变y为i＋er或est 如: easy — easier — easiest happy — happier — happiest 再如：early, busy, heavy, dirty, lazy 也如此。
4) 重读闭音节，单辅音结尾的，双写这个辅音字母＋er 或 est的词：① fat — fatter — fattest ② thin — thinner — thinnest ③ ht — htter — httest ④ red — redder — reddest ⑤ wet — wetter — wettest ⑥ big — bigger — biggest
5) 多音节和部分双音节的词需要在形容词原级前＋mre 构成比较级，＋the mst 构成最高级。如： beautiful － mre beautiful － the mst beautiful 又如: delicius, ppular, imprtant, interesting, expensive,双音节的词如: careful － mre careful － the mst careful useful － mre useful － the mst useful
far — farther —farthest far — further — furthest ld — elder — eldest ld — lder — ldest
1. Cmplete the chart.
mre dangerus
the mst dangerus
mre ppular
the mst ppular
形容词与 副词的最高级的用法
形容词和副词最高级常用于三者三者以上的人或事之间的比较。在表示最高程度即表示其中一个在某方面“最”时使用，在句中使用时，形容词最高级前面通用the .句中常含有表示比较范围的介词f 或者in ;f后面一般接表示一群人或事物的代词或名词，in 后面一般接表示单位或场所的名词。
1. 主语+be/v+(the)+最高级+ 在某一范围内或某类人或物中最
This is the highest muntain in China .
2. 主语+be+ne f the +形容词最高级+n.复+ 表示“...是某一范围内或某类人或物中最
It is ne f the widest rads in ur twn
3.主语+be+the +序数词+形容词最高级+n单.+in/f ... 表示 是某一范围内或某类人或物中的第 的
Li Ming is the secnd tallest by in ur schl.
4.疑问词+be/v +(the)+最高级，A,B r C? 在A,B ,C 中， 最
Which is the biggest , the mn , the earth r the sun
注意： 形容词最高级做表语时，the有时可以省略。 He is (the) strngest. 副词最高级前的the可以省略。 Jim jumps (the )highset.最高级前有名词所有格或物主代词时不再用the She is my best friends
最高级与比较级之间的转换
形容词和副词的最高级可以和“比较级+ than+any ther +n. 单数 进行互换 比较级+than+the ther+ 可数名词
Tm is the tallest in his class =Tm is taller than any ther student in his class. Tm 在他班里是最高的。 Tm 比他班里其他任何一个都高。 Tm is taller than the ther students in his class. Tm 比他班里的其他学生都高
1. -Which cuntry has the _____ ppulatin in the wrld. - China . It a little ____ than that f India. A. mst mst B. biggest bigger C. mre mst 2. Winter is ____ seasn, and winter vacatin is ___ than summer vacatin . A. clder ;the shrest B. the cldest; shrt C. the cldest ;shter D. clder; shter 3This temple is ne f ____ buildings in the twn. A. ld B. lder C. ldest D. the ldest
修饰人口的单词 big large small
ne f + the + adj 最高级+n. 复
4. Bb jumps farther than ____ in his class. A. any ther bys B. the ther bys C. any by D ther bys
2. Match verbs and bjects. Then add ne mre bject t each list.
the farmhuse
3. Circle the crrect wrd and /r fill in the blank with the crrect frm f the wrd in brackets fr each sentence.
1. An elephant weighs (few/many) times mre than a dg.2. An adult panda can eat (much/a little) mre than a cat.3. Canada is a (little/lt) less ______________ (crwded) than China.4. A tiger is (much/a little) _________ (strng) than a man.
小测：1. I jumped _____than Bill in the sprts meet last year. A.high B.higher C.highest D.the highest2. Em ma lked after her pet dg____ f all her friends. A.careful B.mst careful C.mre carefully D.the mst carefully 3. Bb jumps farther than____ in his class. A.any ther bys B.the ther bys C.any bys D.ther bys4. Here are sme rules n whale________(prtect).5. We shuld stp____(put) rubbish int the sea.