恩,你這個句子沒有問題.不過這只是這個句子結構里面很小的一部分哦!
I find learning English difficult.（difficult是形容詞做賓補,learning English是動名詞做賓語）
賓語由名詞、代詞、不定式或相當于名詞的詞、短語來擔任.
能夠充當賓補的大致還有：不定式,現(xiàn)在分詞,過去分詞,形容詞,介賓短語.一般情況下,賓補通常緊跟在賓語之后.
你給的這個句子里面呢,him是賓語,at school是介賓短語做賓語補足語.
舉例如下：
(1) You will find it a very difficult book.
(2) The youth found it a hard problem to think about.
(3) When he came to himself,he found himself surrounded by a group of boys.
(4) I hope to find you in better spirits when we meet again.
(5) I find the Chinese people to be happy and cheerful.
注意：find+賓語+賓補這一結構中通常不使用動詞原形來充當賓語補足語,即沒有“find+賓語+動詞原形”這樣的結構.
【試題鏈接】
A cook will be immediately fired if he is found ____ in the kitchen.(03全國卷)
A．smoke B．smoking C．to smoke D．smoked
答案：B.