abit is no good/use +doing...是习惯用法,应该记住的。意思是:做...没有好处/用adccdccccdbbadaa
have difficulty (in) doing sth. 做某事有困难.(in可以省略) a
regret to do sth. 很遗憾地/抱歉地做...(事情还没有做) I regret to tell you that you can't pass the examination.我很遗憾地通知你你不能通过这次考试. regret doing sth. 很遗憾/后悔做了...(为已经做过的事而感到...) I regret disturbing yo so long.我很抱歉打扰了你那么久.
11.Afinish doing sth12.A13.A14.D15.C mind doing sth16.C17.D18.D19.A20.C 你把STOP打成了HELP了吧22.C23.D24.C25.B26.Aforget to do意思是别忘了去做某事27.B 被动语态28.A 现在进行时表将来时29.A havedifficultydoing 30.A regret to do sth. 很遗憾地/抱歉地做...(事情还没有做)