Question

（ ）He found _______ very diffcult_______ the Maths problems. A that;to work out

B this; working out c him; work out Dit ; to work out选哪一个答案 ，为什么？

Answer 1

He found _______ very diffcult_______ the Maths problems. A that;to work out B this; working out c him; work out Dit ; to work out
选D
这边是it作形式宾语，代替后面的【to work out the maths problem】
this that没有这种用法
【find it +adj to do sth】固定用法
有不会的可以再问我

Answer 2

it, to work out

find it very difficult to do sth.

Answer 3

答案选D！
解析：这里考察的是it做形式宾语的用法，真正的宾语是动词不定式to work out the Maths problems 。本来原句可以写成：He found it was very diffcult to work out the Maths problems 。但为了避免头重脚轻。于是用了 sb find it +形容词 to do sth 这样的结构。这是英语中的常用法：）

Answer 4

选D
it 在这里作形式主语，真正的主语是后面的to do
希望能帮助到你
望采纳，谢谢！！