2道非谓语动词习题,

题目

2道非谓语动词习题,
谢绝不相关答案、请自重!
1._____ many times,he couldn’t understand it.
______many times,he still couldn’t understand it.
A.Having been told B.Having told C.He had been told D.Though he had been told
请问这两道题的答案是不是都可以同时选A和C,还是不可以.为什么?
2.There are not many shoes for him_____.
A.to choose from B.to choose
类似这样的题什么时候该有from这样的介词或是不应该有我分不清楚.希望能说明一下.

答案

第一题：可同时选A和D.
A是现在分词的完成被动式做时间状语,表发被动、发生在谓语动作之前的动作
D是though引导的让步状语从句.
第二题：这里是不定式作复合结构作定语.一般来说,不及物动词不定式作定语时要加上相应的介词.
这里的choose from是从.之间选择之意,from不可少.