几道关于非谓语动词的高中英语选择题,请说明为什么,

题目

几道关于非谓语动词的高中英语选择题,请说明为什么,

 Robert is said_____ abroad,but I don’t know what country he studied in.
  A.to have studied     B.to study                 C.to be studying   D.to have been studying

 I’ve worked with children before,so I know what______ in my new job.
  A.expected       B.toexpect         C.to beexpecting  D.expects 

It is said in Australia there is more land than the governmentknows______.
A.it what to do with        B.what to do it with    C.whatto do with it      D.to do what with it

Theman we followed suddenly stopped and looked as if _______ whether he was goingin the right direction.
A.seeing             &

答案

选A.主要看下文,下文“学习”使用了过去式,证明之前的出国留学已经发生,而且他已经回来.所以应该选择完成时.

选B.不定式表示将来.根据语义选择.

选C.也是看语义：据说澳大利亚的土地富余到连政府都不知道怎么办.what to do with it是一个比较固定的搭配.

选D.look as if to do something.看起来像是要做某事.其实这个短句用进行时也可以的,不过语义不太对,因为后面的动作发生在停下之后的,所以用不定式才更符合逻辑