初中英语Unit 4 The Wonders of NatureSection A课文内容课件ppt

这是一份初中英语Unit 4 The Wonders of NatureSection A课文内容课件ppt，共26页。PPT课件主要包含了Objectives，Lead-in，a ，b ，不规则变化，big，bigger，biggest， yuan ， yuan等内容，欢迎下载使用。
T talk abut gegraphy facts abut natural wnders.T cmpare facts abut famus places.T share gegraphy facts using large numbers.
What d yu knw abut MuntQmlangma?
What makes it amazing?
It’s the highest muntain in the wrld.
It’s 8848.86 metres high.
What d yu knw abut the Sahara Desert?
It’s abut 9,000,000 square kilmetres in size.
It’s the biggest desert in the wrld.
What d yu knw abut the Dead Sea?
Its surface is 416 metres belw sea level.
It’s the lwest place in the wrld.
What d yu knw abut the Mariana Trench?
It’s abut 11,000 metres deep.
It’s the deepest pint in the cean.
Match the places with the pictures.
_____ Nile River _____ Angel Falls _____Munt Qmlangma_____ Dead Sea _____ Sahara Desert _____ Mariana Trench
Listen t the game shw. Cmplete the descriptins f the places.
highest muntain
lwest place
biggest desert
deepest pint
最高级(superlatives)
“highest” is the superlative f “high” “biggest” is the superlative f “big”“lwest” is the superlative f “lw”“deepest” is the superlative f “deep”
形容词 / 副词最高级变化规则
high— highestlw — lwestdeep —deepest
一般情况下，在词尾加-est
large — largestfine — finest
以不发音字母e结尾的词，在词尾加-st
heavy — heaviesteasy — easiestearly — earliest
以“辅音字母 + y”结尾的双音节词，先把y改为 i ,再加-est
big — biggestfat — fattestthin — thinnest
重读闭音节词词尾只有一个辅音字母时，先双写该辅音字母，再加-est
beautiful — mst beautifulinteresting — mst interestingdelicius — mst delicius
多音节词和部分双音节词在词前加mst
GOOD, BETTER, BEST
Gd, better, best,Never let it rest,Till gd be better,And better best.
Bad, wrse, wrst,Never fight against,Get better and better,And yu’ll be the best.
This apple is the biggest f the three.
This pen is the mst expensive f the three.
mre expensive
Listen again. Cmplete the measurements in 1b with the numbers belw.
Listening tips:1. Learn abut the listening tasks and lk thrugh the numbers in the bx.2. Pay attentin t the places and numbers while listening.3. Match the places with the numbers.
416 8848.86 11,000 9,000,000
1000以上的基数词的表示法：从数字的右端向左端数，每三位数加一个逗点；从右端向左端开始，第一个逗点处读thusand(千)，第二个逗点处读millin(百万)，第三个逗点读billin(十亿)；读的时候通常在hundred后加and,如果百位数为0，则在thusand后加and。
9,883 65,359 265,468 60,263,050
nine thusand, eight hundred and eighty-three
sixty-five thusand, three hundred and fifty-nine
tw hundred and sixty-five thusand, fur hundred and sixty-eight
sixty millin, tw hundred and sixty-three thusand and fifty
Talk abut the places yu have learnt abut.
What’s the lwest place n earth?
It’s the deep sea.
Nw, what’s …
Hw lw is it?
Ask and answer.
What’s the highest muntain in the wrld?
It’s Munt Qmlangma!
Hw high is it?
What’s the biggest desert in the wrld?
It’s the Sahara Desert!
Hw big is it?
It’s abut 9,000,000 square kilmetres.
Where’s the deepest pint in the cean?
It’s the Mariana Trench!
Hw deep is it?
Language pints
1. _____ metres belw sea level 海平面下_____米
prep. 在（或到）……下面；少于；低于
adv. 在（或到）……下面
（1）Please dn’t write belw this line. 请不要写到这条线下面。（2）They live n the flr belw. 他们住在下一层楼。
The muse is under the desk. 老鼠在桌子下面。
在（或到、通过）……下面（表示在某物的正下方）
2. Its surface is … metres belw sea level. 它的平面在海平面以下……米。
v. 浮出水面；显露；出现
（1）The surface f the desk is smth. 桌子的表面很光滑。（2）The submarine surfaced near the island. 潜艇在岛屿附近浮出水面。
写出下列单词的最高级。
1. gd _______ 2. cmfrtable ________________ 3. big _______ 4. happy ________ 5. cheap ________ 6. many _______ 7. difficult ______________ 8. little _____________
bestmst cmfrtablebiggesthappiestcheapestmstmst difficult least
写出下列数字的英文表达。
433,024 856,730,452 59,725
fur hundred and thirty-three thusand and twenty-fur
eight hundred and fifty-six millin, seven hundred and thirty, fur hundred and fifty-tw
fifty-nine thusand, seven hundred and twenty-five