1.have trouble/difficulty(in)doing sth. 做某事有困难
2.do sb. a favor/give sb. a hand 给某人帮助
3.ask for help/seek for help 寻求帮助
4.encounter some problems 遇到一些问题
5.be busy/occupied/engaged in doing sth.忙于做某事
7.make preparations for.…为某事做准备
9.put...in use 学以致用
10.let sb. down 让某人失望
11.overcome the fear 克服恐惧
12.be anxious/eager to do sth./long to do sth.渴望做某事
13.take the trouble to do sth. 费心地去做某事
14.offer some constructive guidance提供一些有益的指导
15.be grateful/thankful/appreciative to sb.for sth.因某事感激某人
