在这类用法中要特别注意一些常用句型：
be busy (in) doing sth 忙于做某事
be late (in) doing sth 做某事做晚了或做迟了
spend money [time] (in) doing sth 花钱(时间)做某事
waste money [time] (in) doing sth 浪费钱(时间)做某事
have luck (in) doing sth 做某事时有运气(走运)
have difficulty (in) doing sth 做某事有困难
have trouble (in) doing sth做某事有困难
have bother (in) doing sth 做某事费劲
have a problem (in) doing sth做某事有困难
have a good time (in) doing sth 做某事很开心
have a hard time (in) doing sth 做某事很辛苦
find difficulty (in) doing sth 做某事发现有困难
There is no difficulty (in) doing sth 做某事没有困难
There is no use (in) doing sth 做某事没有用
There is no point (in) doing sth 做某事没有意义