题目内容：

To master English in such a short time is too difficult for him中的句子成份问题!
To master English in such a short time is too difficult for him中的in such a short time 是状语还是定语?要是状语改成To master English is too difficult for himin in such a short time 句子意思是不是一样?

优质解答

To master English (in such a short time ) is too difficult for him.定语.
强调在这么短的时间,很难.但掌握英语对他来说并不一定难,或许有足够的时间,他很轻松.
To master English is too difficult for him (in such a short time )状语
掌握英语对他来很难,特别还要在这么短的时间内.
注意体会我的翻译.