问题补充:
—Would you likecamping with me?
—I’d like to. But I’m busymy homework.
A. to go; to do
B. to go; doing
C. going; to do
D. going; doing
答案:
A. to go; to do
(答案→)B. to go; doing
C. going; to do
D. going; doing
解析:不定式做句子成分表示具体的将要进行的动作,现在分词做句子成分表示正在进行的伴随性动作,动名词表示抽象动作。句意:你愿意和我一起去露营吗?——我想去,但是我忙着做作业呢。结合语境可知上文是不定式做宾语,下文为现在分词作伴随状语,故选B。