Unit 9 This bird is bigger than the first one 课件

课件22张PPT。Unit 9
This bird is bigger
than the first one
bigbigbiggerbiggestfastfasterfastesttalltalltallertalleststrongstrong strongerstrongestbeautifulmore beautifulmost beautifulbeautiful比较级句子结构：
A + be + 形容词比较级 + than + B
For example：
Tom is older than Bill.
The tree is taller than the flower.
Kate is more beautiful than Mary.
His picture is nicer than hers.
最高级的句子结构：
A+be+the+最高级+范围For example：
Russia is the largest county in the world.
Lucy is the tallest girl in the class.
The nile is the longest river in the world.Japan is smaller than Australia.Watermelon is bigger than apple. Shanghai is larger than Hefei.Snow White is more beautiful than the queen.Cheng Long is taller than Pan Changjiang.
Yao Ming is the tallest of the three.
形容词比较级和最高级的规则变化1:单音节词 ，在词尾加er构成比较级，
加est构成最高级。 tall-- taller -- the tallest long—longer—the longest
small—smaller—the smallest
short—shorter—the shortest
new—newer—the newest2:以不发音的e结尾,直接在词的后面加 r构成比较级,加 st构成最高级nice-- nicer --nicest
large– larger-- largest3.重读闭音节词 ,双写结 尾的辅音字母, 再加er构成比较级，加est构成最高级。 hot – hotter-- hottest
big—bigger—biggest
fat—fatter—fattest
thin—thinner—thinnest
4.以辅音字母+y的词, 把y变i加er构成比较级，把y变i加est构成最高级。 easy-- easier –easiest
busy– busier– busiest
heavy—heavier—heaviest
happy—happier—happiest5.双音节词多音节词在前加 more构成比较级，加most构成最高级。 beautiful --more beautiful --most beautiful
important --more important--most important
6.形容词比较级和最高级的不规则变化 good –better-- best bad – worse-- worst much– more-- most many – more-- most
little– less-- least
Homework1. 复习形容词比较级与最高级的变化规则；
2. 与父母或同学练习Part A 中的对话。Thank you!