形容词比较级最高级规则变化
（单音节词和少数双音节词）
1.一般情况下，直接+er/est
eg：cold strong fast slow
Exercise
1.small 3.warm 5.cold
2.high 4.short 6.strong
nice
nicer
nicest
1.The mooncake in picture 1 is nice. 2.The mooncake in picture 2 is nicer. 3.The mooncake in picture 3 is the nicest.
fast-faster-fastest early-earlier-earliest
2.大部分多音节词和双音节词，在词前加more/most eg: quickly strongly carefully efficiently
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heavy heavier
heaviest
1.The pig is heavy. 2.The bear is heavier than the pig. 3.The elephant is the heaviest of all.
形容词比较级最高级规则变化
（单音节词和少数双音节词）
2.以e结尾 +r/st
eg：nice large polite
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Exercise
1.nice 3.fine 5.strange
rge 4.simple 6.wise
形容词和副词比较级和最高级的构成
1、规则变化
构成方法
1.一般在词尾加-er/ə/或-est/ist/
原级 fast
比较级 faster
最高级 fastest
单音节 词和少 数多音 节词
2.以字母e结尾的形容词，加-r或-st
3.重读闭音节词只有一个辅音字母时， 应先双写辅音字母；再加-es或-est
Exercise
1.active 3.effective 5.honest
2.beautiful 4.difficult 6.careful
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副词比较级最高级规则变化
1.单音节和少数双音节词用加词尾的方法（变化规则同形容词） eg：hard -harder-hardest
¥8
¥5
¥3
cheap
cheaper
cheapest
1.The first mooncake is cheap. 2.The second mooncake is cheaper than the first one.
3.The third mooncake is the cheapest of all.
形容词和副词的 比较级与最高级
small
smaller smallest
1.The first mooncake is small.
2.The second mooncake is smaller than the first one. 3.The third mooncake is the smallest of all.
形容词比较级最高级规则变化
（单音节词和少数双音节词）
3.以辅音字母结尾的重读闭音节，应 先双写末尾辅音字母+er/est eg: thin fat big
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Exercise
1.hot 3.thin 5.wet
nicer
nicest
4.以“辅音字母+y”结尾的双音节词， 先改“y”为“i”,再加-er或-est
nice big easy early
多音节 词和部 分双音 节词
5.在词前加more或most
tired
easily
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形容词比较级最高级规则变化
（单音节词和少数双音节词）
4.以“辅音字母+y”结尾的双音 节词，先改“y”为“i”,+er/est
eg: funny easy
Exercise
1.funny 3.hungry 5.friendly
2.happy 4.dry 6.lucky
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big
bigger
biggest
1.The green oranges are big. 2.The orange ones are bigger. 3.The red ones are the biggest of all.
all the cars.
形容词比较级最高级规则变化
（其他双音节词和多音节词）
5.多音节词和部分双音节词，在词 前加more/most
eg: beautiful serious active careful
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Jim
Tom
Stallone
1.Jim is athletic. 2.Tom is more athletic than Jim. 3.Stallone is the most athletic of them.
500 yuan
50,000 yuan 250,000 yuan
1.The bike is expensive. 2.The red car is more expensive than the bike. 3.The green car is the most expensive among