study doing something 可以说已经付出了行动了
study to do something 只能说是有这个意愿,但还没有行动起来
study doing:study可用作不及物动词,也可用作及物动词。用作及物动词时,接名词、代词或带疑问词的动词不定式或从句作宾语,有时还可接“反身代词+形容词”构成的复合宾语
①,study后面接“学科”,“课程”,“项目”,“话题”
I study Maths.
I study English.
I study the history of the CPC.