I think it + adj + for sb to do sth

I think it + adj + for sb to do sth
I think it + adj + for sb to do sth

I think it + adj + for sb to do sth

答：I think it easy to learn English.
此句中的it是形式宾语,不定式短语to learn English为真正的宾语.
此句相当于I think it is easy to learn English. 此句则为think后接一宾语从句.

这个句型实际是不定式的复合结构。常用的动词还有make, find....
如果形容词是对to do进行修饰，就用for sb
如果形容词是对人进行的赞扬，表扬，批评，就用of sb.

意思是 发现某人做某事是怎么样

相当于i think that it is adj for sb to do sth