1.try one’s best to do sth → spare no effort to do sth（尽最大）努力做某事
She tried her best to solve the problem.
她尽了最大的努力解决这个问题。
The prosecution did its best to undermine the credibility of the witness.
原告竭力削弱证人的可信性。
He did his best to remain calm, but there was a distinct edge to his voice.
尽管他竭力保持镇静，话音里仍明显带有怒气。
The management is doing its best to improve the situation.
管理部门正在竭尽全力改善局面。
John was doing his best to give Francis the news in a matter-of-fact way.
约翰尽量不露声色地把消息告诉弗朗西斯。
She has done her best to keep calm but finds herself trembling with tension and indecision.
她尽力保持镇定，可还是由于紧张、犹豫不决而抖个不停。
Washington was last night doing its best to mend fences with the Europeans, saying it understood their concerns.
昨晚，华盛顿尽最大努力与欧洲各国修好，称理解其担忧。
She did her best to disarm her critics.
她竭尽所能让批评她的那些人消气。
I’ll do my best to find out.
我会尽力查明真相。
It wasn’t her fault, she was trying her best to help.
这不是她的错，她是尽力帮忙的。
They’re trying their best to bring together those separated families.
他们正尽最大的努力让离散的家人重聚。
He did his best to talk me round, but I wouldn’t speak to him.
他竭力想要说服我改变主意，但是我不愿意跟他讲话。
She did her best to appear more self-assured than she felt.
她竭力让自己表现得比实际更自信。
He spared no effort to make her happy again.
为使她重新快乐起来，他想尽了办法。
The government is determined to spare no effort in investigating this case thoroughly.
政府决定不遗余力地彻底调查这个案子。
We will spare no pains to support you.
我们将全力支持你们。
2.go to great lengths to do sth全力做某事
The government’s going to great lengths to demonstrate its military might.
该政府正不遗余力地展示其军事力量。
Jane goes to great lengths to explain that this is not the whole story.
简竭力地解释说那不是事情的全貌。
Greta Garbo went to great lengths to hide from reporters and photographers.
葛丽泰·嘉宝想方设法躲开记者和摄影师。
3.make joint / combined efforts to do sth共同努力做某事；通力合作做某事
Both the press and the public made joint/ combined efforts to bring about a change in the law.
媒体和公众共同努力通力合作变更了这项法律。
He made determined efforts to overcome the scandal.
他作出了坚持不懈的努力去克服丑闻造成的不良影响。
《柯林斯高阶英汉双解学习词典》
She made strenuous efforts to tame her anger.
她竭力压制心头怒火。
《牛津高阶英汉双解词典》
She made strenuous efforts to tame her anger.
她竭力压制心头怒火。
4.devote / commit / dedicate oneself to （doing）sth致力于，全力倾注于，毫无保留地献身于，投身于
I devote myself to helping the poor.
我致力于帮助穷人。
She devoted herself to her career.
她全力倾注于自己的事业。
She has devoted herself unreservedly to the great cause.
她毫无保留地献身于这伟大的事业。
He devoted himself to developing the space industry.
他投身于发展航天工业。
She committed herself body and soul to fighting for the cause.
她全心全意为这一事业而奋斗。
We should devote our energy to the career. 我们应该致力于这项事业。
Borrowers should think carefully before committing themselves to taking out a loan.
借款人应当慎重考虑之后再行借贷。
《牛津高阶英汉双解词典》
Both sides committed themselves to settle the dispute peacefully.
双方承诺和平解决争端。《牛津高阶英汉双解词典》
谁能解释一下，这个句子的正误？
She dedicates herself to her work.
她献身于自己的工作。
Back on the island, he dedicated himself to politics…
回到岛上后，他便投身于政治。
He dedicated his life to helping the poor.
他毕生致力于帮助穷人。
Bessie has dedicated her life to caring for others.
贝茜一生都致力于照顾他人。
He had dedicated his life to bettering the lot of the oppressed people of South Africa
他毕生致力于改变南非受压迫人民的命运。
Diane had dedicated her life to caring for him to the exclusion of all else.
黛安娜一生都在照顾他，对其他一切都无暇顾及。
He dedicated his life to serving the people.
他毕生致力于为人民服务。
She dedicated herself to art.
她献身艺术。
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