A recent survey shows that most adolescents eat three times as much protein as they actually need ever day.
红色的部分不也以变成 three times protein as much as 吗?
语法书上说as+adj+a/an+n的结构一定要有a或者an,否则不成立:例如
She is as good a teacher as her sister. (正)
She is as good teacher as her sister.(错)
那题目中的as much protein as 不是违反了as+adj/adv as 的原则吗?同时因为protein不可数所以肯定不可以用a ,所以也不是as+adj+a/an+n的结构
请问as much protein as 是什么用法呢?
much在此是限定词(后位限定词),不是形容词。所以与语法规则并无矛盾。
我们可以说 so much money, too much money, how much money, as much money, more money, a lot more money.
作为表示数量意义的限定词many, much, little, few都可以被程度副词修饰,后接复数名词或不可数名词。所以,可以说 too little water, so little water, as little water, how little water, too many mistakes, so many mistakes, how many mistakes, as many mistakes.
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A is a beautiful girl. / B is a beautiful girl.
A is a girl as beautiful as B is. (形容词)
A is as beautiful a girl as B is. (形容词)
A has money. / B has money.
A has money as much as B does. (X,原因是much是量词)
A has as much money as B does. (√)
类似的,你也可以造个as many books as 之类的句子
这种结构,量词不能放名词后面,所以你的protein句子应该如题目的原始句那样。
你的2个句子
She is as good a teacher as her sister is. (正)
She is as good teacher as her sister.(错)
红色的部分错了,前面的as相当于so, 是副词,不能修饰 good teacher 这个名词词组
另外,good teacher 不加冠词也错。She is a teacher as good as her sister is. (对)
我前面有个帖子专门简明地讲了这种修饰关系,可以去查查。
关键是adj.修饰名词;adv 修饰adj. 不用去背那种无聊的“公式”