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比较级的语法讲解一、比较级的含义及用法6B的前两单元都是关于比较级的问题,但两个单元讲的不是同一种类型的比较级。第一单元主要是形容词的比较级,第二单元主要是副词的比较级。(一)形容词比较级 在第一单元中,主要是对物品的大小,长短,高矮,胖瘦,年龄进行比较,涉及的词汇是形容词。在具体应用时要注意的是以下几个方面的内容: 1、有比较才有比较级。如:I am taller than him . 2、比较结果一样用原级。如:I am as tall as him . 3、比较两人的东西,选择的人称应用名词性物主代词。如:Whose bag is heavier, yours or mine? 4、比较出比别人多多少或高多少等类似的问题时,要把多多少放在形容词比较级前面。如:I am 5 cm taller than you . 5、对含有形容词比较级的一般疑问句的回答,要注意be动词的用法。如:Whose apples are heavier, yours or mine? Mine are.(二)副词比较级 在第二单元中,主要是对动作的程度进行比较,涉及的词汇是副词。在具体的应用中也要注意以下几个方面的内容: 1、对动作的程度比较时,所用的时间状态一般为一般现在时。以现在的时间为基准。 2、注意其一般现在时第三人称单数形式。 3、像这样的问句:Who runs faster , Jim or Tom?其回答不能受第一单元的影响而答出Jim is ,而应该是Jim does. 另外,在第二单元中的be good at 和do well in 的后面都应加名词或动名词,都应该是项目名称,如:They are good at singing.并且,be good at 和do well in也有比较级,如:Nancy is better at PE than me .二、比较级的构成形容词比较级和副词比较级的构成方法基本一致:1.、一般情况下,在单词的词尾直接加-er。如:tall-taller small-smaller high-higher fast-faster2、以字母e结尾的单词加-r。如:nice-nicer late-later3、重读闭音节词,应双写辅音字母,再加-er。如:hot-hotter red-redder big-bigger thin-thinner fat-fatter4、 “辅音字母+y”结尾的词,先把y改为i,再加-er。如:heavy-heavier busy-busier happy-happier5、大多数较长的多音节形容词在前面加more。如:carefully- more carefully difficult- more difficult6、 还有一些形容词的比较级的变化是不规则的,这些词就要同学们好好记一记了,如:good/well-better bad-worse many/much-more 三、比较级的运用(一)形容词比较级的句式结构 句子中一定不能缺少be动词!1、陈述句 A am/is/are 形容词比较级 than B.例如:I am older than my cousin. You are taller than me. Jack is one year younger than Jim. Su Hais hair is longer than Liu Taos.2、一般疑问句 Am/Is/Are A 形容词比较级 than B?例如:Are you taller than me? Is Jack one year younger than Jim? Is Su Hais hair longer than Liu Taos?3、特殊疑问句Who is/are 形容词比较级 than B?Who is/are 形容词比较级,A or B?Whose 名词 is/are 形容词比较级 than Bs/名词性物主代词?Whose 名词 is/are 形容词比较级,As or Bs?例如:Who is taller than you? Who is taller, you or me? Whose hair is longer than Liu Taos? Whose hair is longer, Su Hais or Liu Taos?(二)副词比较级的句式结构 句子中一定不能出现be动词!1、陈述句 A 动词(s) 副词比较级 than B.例如:I run faster than my cousin. Su Hais kite flies lower than Liu Taos. The boys jump higher than the girls.2、一般疑问句 Do/Does A 动词原形 副词比较级 than B? 例如:Do you run faster than your cousin? Does Su Hais kite fly lower than Liu Taos? Do the boys jump higher than the girls?3、特殊疑问句Who 动词s 副词比较级 than B?Who 动词s 副词比较级,A or B?Whose 名词 动词s 副词比较级 than Bs/名词性物主代词?Whose 名词 动词s 副词比较级,As or Bs?例如:Who runs faster than your cousin? (I do. / I run faster.) Who runs faster, you or your cousin? (I do. / I run faster.)Whose kite flies lower than Liu Taos? (Su Hais does./ Su Hais kite flies lower.) Whose kite flies lower, Su Hais or Liu Taos? (Su Hais does./ Su Hais kite flies lower.)
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