6. insist on doing 堅持
7. keep an eye on 留意，照看
8. go on doing 繼續(xù)(某件事因故暫停，尚未做完);一直做某事
9. go on to do 接著(一件事已做完，再去做另一件事)
10. hand on 傳下來，依次傳遞
11. happen on 巧遇;偶然發(fā)現(xiàn)
12. have a great effect on 對...有很大影響
13. have / take pity/ mercy on sb. 憐憫某人
14. keep on v.繼續(xù),穿著...不脫
15. keep one's mind on 專心于