1、费尽苦心做某事
... take over 接受，接管；借用，承袭 take pains to do sth. 费尽苦心做某事 take place 发生，进行，举行 ...
2、尽力去做
... pains n.辛苦 take pains to do sth尽力去做 painstaking a.极小心的;勤恳的 ...
3、尽力做某事
... take pains to do sth.尽力做某事 reward n./vt.报酬，奖赏 rewarding值得的 recreation activities娱乐活动 ...
4、费劲苦心做某事
... not on any account 决不 take pains to do sth. 费劲苦心做某事 a multitude of 大量+名词复数 ...