下面是一个人问RON 关于比较省略的问题:(就是问他什么时候可以省略动词什么时候一定要补出)
Is the ONLY rule to decide whether helping verbs are needed is through context? Or can I say if there are NO OBJECT in the sentence, then I must include helping verb, as the examples sited below shown (and same rules apply in the above two examples?)
I eat faster than you (correct) I eat apple faster than you do (correct) I eat apple faster than you (incorrect).
RON神给出了两种需要补出的情况:(我的问题是下面的蓝字部分) there are two instances in which a helping verb is needed: 1) change of tense (see the example above) 2) the sentence is ambiguous without the helping verb.
as far as #2, consider the following two sentences: i can lift more weight than my brother i know more about shakespeare than my brother
the second of these is incorrect, because it's ambiguous -- it could carry one of two meanings: 1) i know more about shakespeare than my brother knows about shakespeare 2) i know more about shakespeare than i know about my own brother
the first is not ambiguous in this way: 1) i can lift more weight than my brother can lift --> PROPERLY PARALLEL ("i" and "my brother" are parallel) 2) you can't construct a meaning that is like #2 above, since "weight" and "my brother" are not parallel constructions.(这里的结构不平行指的是逻辑含义上的不平行?还是概念上的?)
your final sentence -- "i can eat an apple faster than you" -- is actually ok, since it is like my latter example: there is no ambiguity, and there is also no change of tense.(只要时态上不改变就不用补出情态动词can 了吗?难道不会有eat you 的歧义?这和前面的brother和weight 的不平行有什么联系吗?此处也是不平行所以没有歧义?)
谢谢大家答疑啦~~~~
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