省略介词的七种情形

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