Unit6八上课件

1、bigbiglook at the pictures and understand 看图并理解bigbiggerlook at the pictures and understand 看图并理解look at the pictures and understand 看图并理解bigbiggerbiggestfastlook at the pictures and understand 看图并理解fastfasterlook at the pictures and understand 看图并理解fastfasterfastestlook at the pictures and understa

2、nd 看图并理解the comparative and superlative degrees of adjectives and adverbs(形容词和副词的比较级和最高级)大多数形容词和副词有三个等级： （没有比较时用原级） （两者比较时用比较级） （两者以上用最高级）一、形容词和副词比较级和最高级的构成一、形容词和副词比较级和最高级的构成1、规则变化 构 成 方 法原 级比 较 级最 高 级单音节词和少数多音节词一般在词尾加一般在词尾加-er/或或-est/ist/coldcoldercoldestfastfasterfastest以字母以字母e结尾的形容词，加结尾的形容词，加-r或或

3、-stnicenicernicestlargelargerlargest重读闭音节词只有一个辅音字母重读闭音节词只有一个辅音字母时，应先双写辅音字母；再加时，应先双写辅音字母；再加-es或或-estbigbiggerbiggesthothotterhottest以以“辅音字母辅音字母+y”结尾的双音节结尾的双音节词，先改词，先改“+y”结结尾尾的的双双音音节节词词，先先改改“y”为为“i”,再加再加-er或或-esteasyeasiereasiestearlyearlierearliest多音节词和部分双音节词在词前加在词前加more或或mosttiredmore tiredmost tire

4、deasilymore easilymost easily原级比较级最高级good / wellbetterbestbad / badlyworseworstmany / muchmoremostlittlelessleastfarfartherfarthestfurtherfurthest一、形容词和副词比较级和最高级的构成一、形容词和副词比较级和最高级的构成2、不规则变化二、形容词和副词的比较级和最高级的用法二、形容词和副词的比较级和最高级的用法1、表示“和一样”，用“as+原级+as”结构。 eg: he likes her as much as he likes his sister.

5、2、表示“不如”，用“not as/ so+原级+as”结构或“less+原级+than”结构 eg: he does not smoke as/ so heavily as his brother. he smokes less heavily than his brother.3、表示“比更”，用“比较级+ than”结构。 eg: she sees me more often than she sees her brother.4、表示“中最”,用“最高级+比较范围”结构，比较范围为短语从句。 eg: this is the best picture in the hall. this

6、is the best picture that he has ever painted. 基本用法二、形容词和副词的比较级和最高级的用法二、形容词和副词的比较级和最高级的用法5、表示“越来越”，用“比较级+ and +比较级”结构或“more and more + 原级”结构。 eg: things are getting better and better every day. she is becoming more and more beautiful.6、表示“是的几倍”，用“倍数+as+原级+as”结构，或者“倍数+比较级+than”结构。 eg: this classroom i

7、s three times as big as that one. this classroom is twice bigger than that one. 基本用法二、形容词和副词的比较级和最高级的用法二、形容词和副词的比较级和最高级的用法1、形容词的比较级前面一般不加冠词，但表示“两者中较”的时候，要用“the+比较级+of ”。 eg: she is better than she was yesterday. she is the taller of the two girls.2、形容词的最高级前面一般加定冠词，而副词的最高级前面可加可不加。 eg: this book is th

8、e most difficult that i have ever read. he jumped (the) highest of the three boys.3、比较级前面可以用even(更加)，much(得多)，far(得多)，a littlie(一点)，a bit(一点)，slightly(些微地)，a great deal(大量)，a good deal(大量)，a lot(大量)，still(还，还要)等词语表示不定程度或数量。 eg: i am even less lucky. she is far better than me at writing. 特殊用法follow u

9、ps(随堂练习)1、-mr zhou, all of the students in our group, who lives _? -i think li lei does. a. fat b. father c. farthest d. farest2、the changjiang river is _ than any other river in china. a. shorter b. longer c. shortest d. longest3、bob never dose his homework _ mary. he makes lots of mistakes. a. so careful b. as carefully as c. carefully as d. as careful as4、_ she is, _ she feels. a. the more busy, the more happy