ask sb. for sth.

cambridge phrasal verb book
动词不定式典型错误例析
不可以说Congratulate sb.for sth.吗?
do sb.sth.结构与do sth.for sb.结构的转换
for sb.to do sth.结构与高考
从一道高考试题谈for sb. to do sth.结构
IT'S+ADJ+FOR/OF SB+TO DO STH结构中形容词分类初探
Control system for internal combustion engine
Brake system for automotive vehicles
有关非谓语动词的六类高频考点