1.He was disappointed to find his suggestions _ a.been turned down b.turned down

题目

1.He was disappointed to find his suggestions _ a.been turned down b.turned down
c.to be turned down d.to turn down
2.they found the lecture hard ( )
A to understand B to be understood
3.hen the soldiers marched into the valley,they suddenly found themselves( )by enemy forces.
A、surrounding B、surrounded C、be surrounded D、having surrounded
不要只给答案 解释find在这里到底怎么用
2.they found the lecture hard ( )
A to understand B to be understood C understood D to understood 上面第二题少打两项

答案

第一题选B,第二题选A,第三题选B
turn down the suggestion,surround them,因为宾语补足语和宾语构成的是动宾关系,所以需要用-ED分词来表示被动；第二题相当于是they found it hard to understand the lecture.