1、形容词一.用法二.词类转换（名词变成形容词）三.形容词比较级与最高级的变化四.形容词比较级与最高级的应用 一.用法1.位于名词前，做定语修饰名词。例：a beautiful girl2.位于系动词后面，构成系表结构。例:This is a beautiful girl.3.-ing式形容词修饰物，-ed式形容词修饰人。例：This is an _ book,and Im so _ in it.A.interested;interestingB.interesting;interested 练一练1.There is an book on the desk.A.interesting B.sma
2、rt C.tall D.young2.I am at the news.A.exciting;excited B.excited;exciting C.excited;excited D.exciting;exciting二.词类转换（名词变成形容词）1.在名词词尾加y(尤其是天气类名词)。例：sun-sunny rain-rainy cloud-cloudy2.一些抽象名词在后面加-ful变成肯定意义形容词。例：care-careful beauty-beautiful 3.一些抽象名词在后面加-less变成否定意义的形容词。例：care-careless use-useless4.在名词词
3、尾加-ly变成形容词。例：friend-friendly love-lovely5.以ce结尾的名词，改ce为t。例：difference-different练一练1.rain()2.cloud()3.luck()4.health()5.sun()6.love()7.snow()8.use()肯定意义 9.color()10.help()否定意义 11.friend()12.importance()三.形容词比较级与最高级的变化1.直接在后面加er或者est。例：tall-taller-tallest long-longer-longest2.以不发音的e结尾，直接在后面加r或st。例：nic
4、e-nicer-nicest3.以辅音字母加y结尾的形容词，把y改成i再加er或者est.例：busy-busier-busiest 4.重读闭音节下的辅元辅结构，双写最后一个辅音字母加er或者est.例：big-bigger-biggest5.多音节形容词与部分双音节，在前面加more或者most。careful-more careful-most careful boring-more boring-most boring 四.形容词比较级与最高级的应用一.原级比较：1.A+be 动词+as+形容词原级+as+B：A和B一样.例：This book is as big as that on
5、e.2.A+be 动词+not+so/as+形容词原级+as+B：A和B不一样.例：This book isnt as big as that one.四.形容词比较级与最高级的应用二.比较级比较：1.A+be 动词+形容词比较级+than+B.A比B更.例：This book is bigger than that one.2.The+比较级，the+比较级.越.,就越.例：The busier he is,the happier he feels.3.“形容词比较级+and+形容词比较级”或“more and more+形容词比较级”表示“越来越.”例：Its getting darker
6、 and darker.四.形容词比较级与最高级的应用三.最高级比较：1.be动词+the+形容词最高级+可数名词单数+比较范围.是.之中最.的。例：He is the tallest student in his class.2.be动词+one of+形容词最高级+可数名词复数+比较范围.是.之中最.的之一。例：He is on of the tallest students in his class.练一练1.I think science is _ than Japanese.Amuch important B.important C.much more importantD.more
7、 much important2.you work,you will do.A.Harder；better B.The harder；the worse C.Hardest；best D.The harder；the better 3.The sun is than the moon.A.small B.smaller C.big D.bigger 4.A horse is than a dog.A.much heavy B.more heavyC.much heavier D.more heavy5.I am _ than my aunt.A.strong B.big C.shorter D.shortest
