沪教牛津版（2024）八年级上册Module2 Science and technologyUnit 3 Computers精品课件ppt

这是一份沪教牛津版（2024）八年级上册Module2 Science and technologyUnit 3 Computers精品课件ppt，共31页。PPT课件主要包含了找规律，形容词和副词的比较级，– est，y – iest，– st，“双写” – st，不规则变化，-er，more，than等内容，欢迎下载使用。
Will cmputers make ur lives better?
Revisin and intrductin
Part I Review
shrt — shrter
small — smaller
nice — nicer
safe — safer
big — bigger
thin — thinner
heavy — heavier
happy — happier
Cmparatives and superlatives with adj. and adv.
Part II Pre-Learning
Grammar fcus
delicius — mre delicius interesting — mre interesting imprtant — mre imprtant
carefully — mre carefully quickly — mre quickly easily — mre easily
大多数形容词和副词有三个等级：原级、比较级、最高级。一、形容词比较级的构成构成的规则变化:1) 在形容词后直接加-er。如：shrt — shrter small — smaller2) 以不发音的e结尾，直接加r。如: nice — nicer safe — safer3) 重读闭音节词且末尾只有一个辅音字母时, 先双写这个辅音字 母, 再加-er。如: big — bigger thin — thinner
4) 以“辅音字母+y”结尾的双音节词，先改y为i，再加-er。如：easy — easier happy — happier5) 多音节词和部分双音节词在词前加mre。如： delicius — mre delicius easily — mre easily interesting — mre interesting carefully — mre carefully imprtant — mre imprtant quickly — mre quickly
tall — tallestshrt — shrtestquick — quickestthick — thickestlight — lightestcl — clestwarm — warmestquiet — quietestwild — wildestcalm — calmest
heavy — heaviest easy — easiest tidy — tidiestdry — driest busy — busiest happy — happiesthealthy — healthiesthungry — hungriestearly — earliest
large — largestlate — latestnice — nicest
delicius — the mst deliciusdangerus — the mst dangerusinteresting — the mst interestingppular — the mst ppularbeautiful — the mst beautifulcareful — the mst carefulfriendly — the mst friendly
the mst – adj .
big — biggestht — httestthin — thinnestwet — wettestfat — fattest
二、形容词最高级的构成构成的规则变化:a. 直接加-est. 如：shrt — shrtest small — smallestb. 以-e 结尾的形容词，最高级+st。如：large — largest nice — nicestc. 以辅音字母+y结尾的形容词，变y为i+est。如： busy — busiest heavy — heaviest easy — easiest happy — happiestd. 以重读闭音节结尾，末尾只有一个辅音字母的词，双写最后一个辅音字母，再+est。如： big — biggest thin — thinnest fat — fattest ht — httest
e. 多音节和部分双音节形容词，需在原级前+mst构成最高级。如： imprtant — mst imprtant beautiful — mst beautiful difficult — mst difficult
形容词和副词比较级和最高级构成(规则变化)
cheap, cld, small, warm, yung, high
fine, nice, safe
happy, busy, dirty, easy, lazy, pretty
fat, ht, red, thin, wet, sad
quickly, slwly, useful, careful, ppular, mdern
形容词和副词比较级的用法
1. Wh runs faster, he r she?
2. He runs faster than her.
3. He runs much faster than her.
4. He becmes healthier and healthier.
5. The mre yu exercise, the healthier yu will be.
6. She is less healthy than him.
1. 表示两者之间的选择,可用“Which / Wh … + 比较，… r …?”。2. 表示两者之间的比较，通常用连词 than 引导，表示“更……一些”。3. much / far / a lt, even, still, a little / a bit …修饰比较级,表示程度。
Wh runs faster, he r she?
He runs faster than her.
He runs much faster than her.
4. “比较级+and+比较级”表示“越来越……”。5. “the+比较级 , the+比较级”表示“越……，越……”。6. 表示不及另一方时，用“less+原级+than …” (双音节和多音节词)。
He becmes healthier and healthier.
The mre yu exercise, the healthier yu will be.
Shanghai is becming mre and mre mdern.
She is less healthy than him.
1. 表示三者或三者以上比较,可用“Which / Wh …”+最高级,…, … r …?”表示。2. 最高级+f / amng(同类比较)in … (范围比较)。
形容词和副词的最高级的用法
Wh is the tallest, Tm , Mike , r Jack?
Tm is the tallest f the three.
Tm runs (the) fastest in ur class.
3. 序数词修饰最高级。4. ne f +形容词最高级+名词复数，表示“最……之一”。
Mike is the secnd tallest student in ur class.
Jack is ne f the tallest students in ur class.
When we cmpare tw peple r things, we can use the cmparative f adjectives. We frm the cmparative f adjectives like this：
A The cmparative f adjectives
Part III While-Learning
T frm the cmparative f adjectives, we ften add t shrt adjectives and use with lng adjectives.We ften use after the cmparative f adjectives.
Wrk ut the rule
Salesman：Can I help yu , sir?David：Yes, I need a suitcase. Can yu tell me abut these tw?Salesman：Sure. The red ne csts ￥2,500, and it’s made f leather.David：I see. The red ne is_______________ than the black ne . What abut the weight? Which ne is __________?Salesman：The black ne. It’s made f plastic. Try them, sir.David：Yu’re right . The red ne is than the black ne, and it’s ________ than the black ne. Salesman：D yu have a lt f things t carry?David：Yes, I d. I’ll have the black ne because it’s _______ than the red ne.Salesman: Thank yu very much, sir.
Cmplete the cnversatin belw and n page 40 with the cmparative f the adjectives frm the bx.
mre expensive
big expensive heavy light small
B The superlative f adjectives
When we cmpare mre than tw peple r things, we use the superlative f adjectives.
The red laptp is the smallest amng the three.
T frm the superlative f adjectives, we ften add t shrt adjectives and use with lng adjectives.We usually use in frnt f the superlative f adjectives.
We frm the superlative f adjectives like this:
B1 David is shpping fr a camera. Lk at the phts and write the letter f the crrect mdel after each statement.
David: I’d like t see sme f yur cameras.Salesman: Certainly. This is the mst expensive mdel.This is the cheapest mdel. This is the newest and lightest mdel.
B2 David tld his friend Tny abut his shpping trip. Cmplete David’s sentences with the superlative f the adjectives frm the bx.
Tny: Did they shw yu any cameras?David: Yes. The (1) __________ mdel is (2) __________________________.The (3)______________mdel csts (4)__________. The (5)_______ mdel was made in (6)______.The (7)_______ mdel weighs (8)_______.
99.8mm x 56.4mm x 24.5mm
mst expensive
expensive light ld small
S1: Which is the biggest, the Earth, the Mn r the Sun?S2: The Sun is the biggest.
the Earth, the Mn r the Sun? (big) a bee, a butterfly r an ant? (small) irn, silver r gld? (valuable) a bear, a whale r an elephant? (heavy) a spaceship, a plane r a train? (fast)
Ask and answer questins using the fllwing infrmatin. The first ne has been dne fr yu.
一、完成句子。1. Hainan is a very large Island. It is the secnd _________ island in china. (large)2. Our teacher is as ______ as befre. (busy)3. He is ______________ amng us. (careful)4. Li Lei jumped far ______ than Jim. (far)5. The busier he is, the ________ he feels. (happy)6. I think Ya Ming is ne f ____________ basketball players in NBA. (ht)
the mst careful
Part IV Review
二、用括号中形容词的适当形式填空。1. I am very . But Tm is than I. Frank is _____________. (tired)2. Which is ____________ (difficult), physics r bilgy ? 3. This bk is ________ than the ther tw. It is ____________f the three. (easy)4. In summer it’s _______ (ht) in Wu Han than in Beijing. 5. The Chinese peple have a much ______ (gd) life nw.
the mst tired
mre difficult
the easiest
三、填空。1. Lily gets up __________ (early) than Lucy. 2. Which ges __________ (slwly), Tm r Jim?3. This bk is (interesting) than that ne.4. She wrks ________________ (careful) in her schl.5. Wh ges t bed __________ (late)? Jim, Tm r Jack?I think turkey is ________________ (delicius) f all.
mre interesting
the mst carefully
the mst delicius
四、改写句子。1. We are ging t the Green Restaurant fr lunch. (就划线部分提问) yu ging fr lunch? 2. Sam is the shrtest in his class. (改为同义句) Sam is than student in his class. Sam is than students in his class. Sam is than in his class.3. Hw d yu like Screen City? (改为同义句) d yu Screen City?
any ther
the ther
anyne else