Unit 7 Section A 4a-4c 课件 2023-2024学年人教版 英语 八年级下册

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 intere