If you keep on working hard at English,you will pass the exam nex_英语解答

If you keep on working hard at English,you will pass the exam next time.为什么work后面要加ing

人气：353 ℃　时间：2019-12-25 22:23:32

解答

可以记固定搭配 keep on + doing sth..
也可以记介词后面加动词的ing分词形式.