Question

He told us an interesting story about himself, _______________why he didn’t succ

He told us an interesting story about himself, _______________why he didn’t succeed that time. ?
A. explain
B. to explain
C. explained
D. explaining?

Answer 1

答案D
主要测试非谓语动词。很多考生会认为此处应用不定式结构表示目的，从而误选B。其实，考生没有注意到前后两部分间的逗号，逗号后面部分表示一种伴随状况。正确答案为D项。
不定式作目的状语时，位于句首，常用逗号与后面句子分开，而位于句末时常不用逗号与前面句子分开。作结果状语时，不定式表示一种出乎意料之外的结果；而动词-ing形式表示事情发展的一种自然结果。如：?
I hurried to the airport, (only) to find that the plane had taken off. ?
我匆匆忙忙赶到机场，结果发现飞机起飞了。?
He was working very hard last year, passing the test successfully. ?
去年他一直努力学习，顺利通过了这个测试。?"