John often attends public lectures at the University of Cambridge, mainly _____ his English.
A. improving B. to improve C. to have improved D. improved
老师您好,这道题到底应该选择不定式还是现在分词呢?
我是这样考虑的,因为谓语动词表达的是often attends public lectures,和improve his English之间是有动作上的重合的,所以选择improving而不选 to improve?
还是应该直接理解为:often attends public lectures是为了improve his English,所以直接选 to improve 做目的状语?但是之前看您在类似问题下回答过「位于句末的目的状语(不定式、从句或介词短语)绝对不允许用逗号隔开(除非前面是插入语)。这个句子有逗号隔开,不可能是目的状语,所以排除不定式。」所以这里看到逗号就应该直接排除掉不定式了,是么?
John often attends public lectures at the University of Cambridge, mainly _____ his English.
A. improving B. to improve C. to have improved D. improved
根据本句句意,非谓语动词显然表示目的。而现在分词不可以作目的状语,目的状语具有将来意义,只有不定式才可以担当此任。所以,填 to improve 是必然的。
关于之前的逗号,这仅仅是表达停顿而已,主要是前面有了mainly,否则,不定式作目的状语应一气呵成,通常不需要停顿。
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