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发表于 2018-7-21 21:51:15
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          ◇序数词通常只修饰最高级。 
          Africa is the second largest continent. 
          The Yellow River is the second longest river in China. 
          This is the third most popular song of Michael Jackson. 
          ◇为避免重复,我们通常用that, those, one,  
ones代替前面出现的名词。that代替可数名词单数和不可数名词,those代替可数名词复数。one既可指人又可指物,只能代替可数名词。 
          The weather in China is different from that in America. 
          The book on the table is more interesting than that(或the one)on the  
desk. 
          ?????? A box made of steel is stronger than one made of wood. 
          ?????? 误:In winter, the weather of Beijing is colder than it of  
Shanghai. 
          正:In winter, the weather of Beijing is colder than that of Shanghai. 
          ◇“否定词 + 比较级”相当于最高级。 
          ----Wait until we get a satisfactory reply, will you? 
          ----I couldn't agree more. The idea sounds great to me. 
          Nothing is so easy as this. =Nothing is easier than this. =This is the  
easiest thing. 
          ◇比较级前一般不加冠词。但表示两者中较突出者,且比较级后又有名词或出现了of the two,这时比较级前一定要加the。 
          He is the taller of the two. 
          Of the two jobs,he chose the harder. 
          Which is the younger one, Lily or Lucy? 
          试比较: 
          Which is larger, Canada or Australia? 
          Which is the larger country, Canada or Australia? 
          She is taller than her two sisters. 
          She is the taller of the two sisters. 
          ◇不含than 的比较级前可加不定冠词修饰,构成“a/an+比较级+单数可数名词”表示 “一个更……的人/物”。 
          Why don’t you use a sharper knife? 你为什么不用一把更锋利的刀呢? 
          ◇比较级than 后应用人称代词的主格,但非正式语体中常用宾格。 
          He is taller than I/me. 
          ◇为避免重复,比较级中同样的动词用助动词do, does, did替代。 
          I spend less time doing homework than John does. 
          She tells more funny jokes than we do. 
          以下内容不是初中教学的重点,仅供拓展之用。 
          ◇形容词most前面没有the,不表示最高级的含义,只表示“非常”。 
          It is a most important problem. =It is a very important problem. 
          ◇倍数表达法 
          ▲A is three(four, etc.)times the size(height, length etc.)of B. 
          The new building is four times the size(the height)of the old one. 
          这座新楼是那座旧楼的四倍大(高)/这座新楼比那座旧楼大(高)三倍。 
          ▲A is three(four, etc.)times as big(high, long, etc.)as B. 
          Asia is four times as large as Europe. 亚洲是欧洲的四倍大/亚洲比欧洲大三倍。 
          ▲A is three (four, etc.)times bigger(higher, longer, etc.)than B. 
          Your school is three times bigger than ours.你们的学校比我们的学校大三倍。 
          用times表倍数通常用于三倍以上,两倍可以用twice或double. 
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