to后面接doing的短语有：get down to doing sth、look forward to doing sth、be used to doing sth、Pay attention to doing sth、Stick to doing sth。
1.get down to doing sth.开始认真思考，着手做某事
His son decided to get down to studying in the classroom.他儿子决定静下心来在教室里学习。I must get down to reading this book .我必须静下心来好好阅读这本书了。
2.look forward to doing sth.盼望做某事
My father and I Look forward to seeing you next month.我爸爸和我都盼望着下月能看见你。We’re looking forward to meeting you again .我们都盼望再次看见你。
3.be used to doing sth.习惯做某事
I am used to doing housework /cleaning the window with it.我习惯于做家务/用它清理玻璃。I am not used to staying up too late.我不习惯熬夜太晚。
4.Pay attention to doing sth 注意去做某件事情He pretended to pay attention to listening the teacher.他假装在注意听老师讲课。We must pay attention to listening to the lecture.我必须认真听演讲。
5.Stick to doing sth 坚持做某事情
I think I'll stick to doing exercises every day .我想我将坚持天天锻炼。You should stick to eating some vegetables . 你应该坚持吃蔬菜。