15.B.不定式作目的状语.escape 意为“逃脱”,不接不定式,而常接-ing形式作宾语.只能接-ing形式作宾语的动词还有:mind, admit,avoid, appreciate, consider(考虑), delay, imagine, miss, practice等.

14.C.不定式作结果状语表示主语未曾预料到的结果.

13.D. There being no rain为 there be句型的独立主格形式.

12.B.hold与the Olympic Games之间是被动关系,且2008奥运会尚未举办,应用不定式表将来.

11.A.including为介词;由seat的用法可知,此处应用其过去分词形式.

10.D.with whom to play为“介词+关系代词+不定式”结构在句中作定语,其相当于一个定语从句(with whom she could play).

9.A.what引导的名词性从句作主语且从句中含有实义动词do时,用作表语的不定式可不带to.

8.C.why引导的特殊疑问句通常可用不定式短语来回答.

7.B.forbid sb./sth. to do sth.为固定用法,此句中forbid 的宾语为what.

6.C.he had had repaired是省去了关系代词that/ which的定语从句.