(
课件网) Section A 4a~4c the Nile the Yangtze River the Yellow River 6,671 6,300 5,464 The Yellow River is long . The Yangtze River is a lot_____ than the Yellow River. The Nile is ___ _____ of all. The Yangtze River is not____ long ____ the Nile. longer the longest as as 根据表格完成下面的句子。 Mount Tai is high. Mount Huang is a little _____ than Mount Tai. Qomolangma is _____ _____ of all. Mount Tai is not_____ high ____ Qomolangma. Qomolangma Mount Huang Mount Tai 8,848.43 1,864 1,545 higher the highest as as — What’s _____ mountain in the world — Qomolangma. — _____ is Qomolangma — It’s 8,844.43 meters high. It’s_____than any other mountain. the highest How high higher Grammar focus — Which is _____ salt lake in the world — The Caspian Sea is the deepest ___all the salt lakes. — Did you know that China is one of_____ countries in the world — Yes, I did. It’s ____ older than the US. the deepest of the oldest much 规则变化 1) 一般情况下，单音节或双音节的形容词/副词比较级＋er， 最高级＋est。如: clever — cleverer — cleverest 2) 以e结尾的词，比较级＋r，最高级＋st 即可。 如： nice — nicer — nicest 3) 以辅音字母＋y结尾的变y为i＋er或est 如: easy — easier — easiest 再如：early, busy, heavy, dirty, lazy 也如此。 形容词、副词的比较级和最高级 规则变化和不规则变化 4) 重读闭音节，单辅音结尾的，双写这个辅音字母＋er 或 est的词： ① fat — fatter — fattest ② thin — thinner — thinnest ③ hot — hotter — hottest 5) 多音节和部分双音节的词需要在形容词 原级前＋more 构成比较级，＋the most 构 成最高级。如： beautiful － more beautiful － the most beautiful 双音节的词如: useful － more useful － the most useful 少数单音节词也是这样，如： pleased — more pleased — the most pleased b) 不规则变化： good/ well — better — best bad /ill— worse — worst many/much — more — most little less least far — farther/ further —farthest furthest adjectives comparatives superlatives high higher highest dangerous more dangerous most dangerous long longer longest popular more popular most popular dirty dirtier dirtiest little less least big bigger biggest large larger largest interesting more interesting more interesting fast faster fastest 用于俩者之间程度是否相同的比较。 1.肯定形式用as+形容词原级+as+比较成分，表示:和…一样. 2.否定形式用not so (as)+形容词原级+as+比较成分，表示:前者不及后者。 形容词原级 1.形容词比较级＋ than +比较成分，表示：前者比后者...更（后面的动词往往省略） 2.降级比较： less+形容词原级+than+比较成分，表示：前者不及后者… 3.表示俩者之中较用the+比较级+of the two. 4.比较级形容词可以用a little, much, even, far, rather, a lot 形容词的比较级(用于两者之间的比较): 5 “a/an + 比较级” 表示“又一，再一” e.g. Lily has a doll, but she wants a bigger one. 6.越来越...... 比较级 + and + 比较级 e.g. It’s getting colder and colder. 7.the + 比较级 + 句子，the + 比较级 + 句子 The more you exercise, the better you are. 三者或三者以上相比，表示最高程度时，用“the + 最高级”的结构表示。这种句式一 ... ...
