Study的用法 study to do 还是study doing

Study的用法 study to do 还是study doing study to do还是study doing 英语哟~study to do 和study doing 的区别 learn和study 加doing 还是to do study的用法有几种 study hard 的用法 study abroad 的用法 study study on 与study of 的用法有什么区别 you need study hard还是you need to study hard? 自修室的英语是study room还是study hall? why do you want to study English?