(
课件网) Unit 3 Computers Grammar Will computers make our lives better Revision and introduction Part I Review short — shorter small — smaller nice — nicer safe — safer big — bigger thin — thinner heavy — heavier happy — happier 找规律 Grammar Focus Comparatives and superlatives with adj. and adv. Part II Pre-Learning delicious — more delicious interesting — more interesting important — more important carefully — more carefully quickly — more quickly easily — more easily 找规律 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：short — shorter small — smaller 2) 以不发音的e结尾，直接加r。如: nice — nicer safe — safer 3) 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 形容词和副词的比较级 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 — happier 5) 多音节词和部分双音节词在词前加more。 如： delicious — more delicious easily — more easily interesting — more interesting carefully — more carefully important — more important quickly — more quickly tall — tallest short — shortest quick — quickest thick — thickest light — lightest cool — coolest warm — warmest quiet — quietest wild — wildest calm — calmest – est 找规律 heavy — heaviest easy — easiest tidy — tidiest dry — driest busy — busiest happy — happiest healthy — healthiest hungry — hungriest early — earliest y – iest large — largest late — latest nice — nicest – st 找规律 delicious — the most delicious dangerous — the most dangerous interesting — the most interesting popular — the most popular beautiful — the most beautiful careful — the most careful friendly — the most friendly the most – adj . big — biggest hot — hottest thin — thinnest wet — wettest fat — fattest “双写” – st 二、形容词最高级的构成 构成的规则变化: a. 直接加-est. 如：short — shortest small — smallest b. 以-e 结尾的形容词，最高级+st。如：large — largest nice — nicest c. 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 — happiest d. 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 hot — hottest e. 多音节和部分双音节形容词，需在原级前+most构成最高级。如： important — most important beautiful — most beautiful difficult — most difficult 不规则变化： 原级 比较级 最高级 good / well better best bad / ill worse worst little less least many / much more most far farther / further farthest / furthest old older / elder oldest / eldest 单音节词在词尾比较级加-er或最高级加-est 以e结尾的词，只需加-r或-st 以辅音字母加 y 结尾双音节词变 y 为 i 加 -er或-est 重读闭音节、末尾只有一个辅音字母双写加-er或-est 部分双音节和多音节词在原级前加more或most 形容词和副词比较级和最高级构成(规则变化) cheap, cold, small, warm, young, high fine, nice, safe happy, ... ...
