⑥have difficulty/trouble (in) doing sth.做某事有困难 ⑦be busy (in) doing sth.忙于做某事 ⑧spend money/time (in) doing sth.花费金钱/时间做某事 ⑨prevent/stop...(from) doing sth.阻止……做某事 ⑩There is no sense/point (in) doing sth.做某事没有意义...