高考英语能力测试基础训练9 非谓语动词

2.高考对非谓语动词的测试方向：(1)不定式的完成式、被动式和进行式；(2)不定式的省略；(3)测试只能接动名词的动词和接动名词、不定式有区别的动词的用法；(4)现在分词作宾补、作定语、作状语的用法；(5)测试非谓语动词的否定式。

1. Having a trip abroad is certainly good for the old couple，but it remains ________ whether they will enjoy it.

A.to see　　   B.to be seen　    C.seeing　　   D.seen

2. The research is so designed that once ________ nothing can be done to change it.

A.begins    B.having begun   C.beginning   D.begun