新概念英语青少版 2b Unit 24

形容词和副词的比较级和最高级 词变形
重读闭音节，且只有一个辅音字母结尾时，双写最后一辅音字母加-er, -est hot hotter hottest big thin red wet
fat
sad
形容词和副词的比较级和最高级 词变形
多音节在词前直接加more/most
exciting
interesting friendly excited
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obviously
obvious adj.
e.g.Obviously, she needs help. It isn't obvious,is it?
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answer n.
eg. Do you know the answer to this question?
Do you answer the question?
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than
e.g. Tom is taller than Tim.
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continent
e.g.Australia is a large continent. There are seven continents in the world.
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low
e.g. I find a low-fat yoghurt. low income a low voice
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population density 人口密度 eg. The density of population in this city is very high. Which continent population density? has low
three.
Pattern practice
3.A: Who’s taller---Bob or John?
/Which is hotter---June or July?
B: Oh, John’s the taller of the two. /Oh, July is the hotter of the two.
“最…” 句中常带有表示比较范围的介词 in…或of… e.g. Yao Ming is the tallest of the players.
注：形容词最高级前必须加the
e.g. Tom is the tallest in his class.
练习

( )1. I found he looked ___ than last time when I went to see him. B. well C. good D. bad
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7.Australia’s a continent, and it has only six people to the square mile. 不定冠词a表示类别 表示比例的介词全部用to e.g. 1:2---one to two the square mile---定冠词强调整体中具代表性的一部分.
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population The world population is increasing faster and faster. About seventy percent of the population in China are farmers. India has a large population. Singapore has a small population. What is the population of Canada?
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try out (on)
e.g.We can try it out on this mouse.
try on 试穿(衣服等)；试戴；试用 try n. have a try v. try to do sth. try doing sth. try one’s best to do sth.
Pattern practice
1. A: Bob’s a tall boy.
B: Yes, but John’s taller than Bob.
Pattern practice
2.A: Bob, John and Dan are all tall.
B: Yes, but Dan’s the tallest of the
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quiz e.g.We will have a quiz tomorrow
morning. examination正式的“考试”，如期末考 试、入学考试等。 exam 是examination的缩写，常用于口 语，多为学生使用。 test为“小考 ” quiz 为“测验”,特指事先无准备，随时 进行的测验，也可指（广播节目中的） 一般知识测验、问答比赛、猜谜等
B: You’re right. But Dan’s taller than John.
In fact, Dan’s the tallest boy in our class.
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Homework

测试卷
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trick question
trick These children loved playing tricks on their teacher. He played some clever magic tricks.
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square mile
e.g.The area of China is 9,600,000 square miles.
Uint 24
A quiz
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New words and expressions:
quiz n. 问答比赛，小测试 population density compound n. 人 口密度
try out (on) v.+adv. particle (transitive) (+prep. + object)试一试 than conj. (comparison)比
more exciting
most exciting
形容词和副词的比较级和最高级 词变形
少数不规则变化

many/much
little
more
most
less least
good/well better best bad/badly/ill old far worse worst oldest/eldest farthest/furthest
v.
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Listen to the recording, and answer this question:
How many people are there to the square mile in Australia?
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1. I want to try it out. Can I try it out on you, please? want to do sth 想要做某事 try it out 试一试 try out on+宾语（you） 在....身上试一试
直接加-er, -est.
tall taller tallest
strong long 以e结尾加-r, -st brave braver bravest nice
辅音字母+y结尾，y→i加-er, -est pretty prettier prettiest untidy dirty happy
large
A. better

( )2. Which is ______ , the Nile or the Amazon? A. long B. longer C. longest D. the longer
The Nile.

( )3. It is said that it is ___ today than yesterday. Shall we go swim ming this afternoon? A. the hottest B. hot C. hottest D. hotter
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2. Which is the highest mountain in the British Isles?
当把某人或某物与同类别的一个以上的人或物相比较时，我们使用最高级the highest mountain (the uniquely high mountain 唯一的高的山)
trick question compound n. 陷阱问 题(看似容易其实困难的问题)
square mile compound n. 平方英 里 obviously adv. (viewpoint) (manner) 明显的 answer n. 回答，答复
continent
low
n. 大陆，洲
adj. 低的
Pattern practice
4. (Not with pictures R and S)
A: Who’s the tallest boy in our class?
B: Dan is. Dan’s the tallest.
Pattern practice
5. A: John’s taller than Bob.
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4. I looked it up yesterday. look up---查阅/找 5.They’re both long rivers. both= not only one, but also the other(不止这一个，而且另一个)，分配词，修饰 （双）主语。“两者都.....” 放在be和助动词后面，主要动词前面 6.It isn’t obvious, is it? No, it’s a good question. 否定形式的陈述句+肯定形式的反意疑问句，期望得到肯定的回 答。