我们都知道 half 有一半的意思,通常用作名词和形容词;同时它还可以作不定代词,意为“半数”,当它作主语时,谓语的单复数取决于它指代的部分,当指代的是不可数名词或单数可数名词时,谓语用单数,否则用复数。
当我们表达“半小时”时,用 half an hour,此时 hour 是单数,但是当我们表达一个半小时时,用 one and an half hours,此时用 hour 的复数形式 hours,其它类似,它们作主语时,谓语用复数,例如:
One and a half hours are allowed for the exam.但是当我们用 one hour and a half 表示一个半小时时,谓语用单数,此时的 one hour and a half 是一个整体,例如:One hour and a half is allowed for the exam. Half 作主语时,谓语的单复数形式根据所指代的内容不同而不同,例如:Half of the money was mine.Half of us are still unemployed. 其实,half 还可以作程度副词,表示一半程度,有时也指部分程度,相当于 partly 或 not completely,置于所修饰词的前面,例如:She was half Italian and half English. 在英语的比较句型中,当表程度差异大小时,as … as 的用法让很多人扑朔迷离,特别是与其他程度副词连用;as … as 用来表示比较的东西在某种程度上一样,如数量、大小或价值等,例如:You're as tall as your father.He was as white as a sheet. 当我们想表示被比较的事物之间有很小的区别时,也就是不完全是一样的程度时,通常可以用 nearly 来修饰,例如:He's nearly as tall as you are. What he earns is nearly as much as his wife does. 我们还可以使用 half 来表示具体的差异大小,也就是一半的差异,如 half as … as,意为“是什么的一半”,例如:A nurse only earns half as much as a doctor. 但是在否定句中,上述程度副词所表示的程度就发生了很大变化,如以上句子在否定句中的意思: He is not nearly as tall as you are.What he earns is not nearly as much as his wife does. 同样地,not half as 也不是指“没有什么的一半”,它所表达的程度跟 not nearly 类似,意为“远非,差得多”,有时也用作 not half such a,此时它们相当于 nowhere near,例如:He is not half such a fool as they think.He is nowhere near as a fool as they think. She is not half as clever as her sister. She is nowhere near as clever as her sister. 由此可见,在比较句型 as … as 中,程度副词在肯定句和否定句中所表示的程度往往差距很大;还有一个就是 quite,它在否定句中所表达的程度跟 nearly 或 half 相反,也即 quite 在否定句中强调小的差异,例如: My flat isn't quite as big as Sally's.My flat isn't nearly as big as Sally's.My flat isn't half nearly as big as Sally's.您的支持最重要!!!如果您觉得这篇文章对您有帮助,请不要吝啬在右下角点“在看”和点赞。为了防止迷路,请设置为”星标“,我们将一如既往地输出更多优质的此类文章。
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