It is +adj./n. + for sb. to do sth. 做某事对某人来说……
It是形式主语，真正的主语是不定式to do sth. for sb. 是不定式的逻辑主语。例如：
[1]不定式,主语,相关知识点知识点1:不定式作主语下面归类五种句型：①It+be+名词+to doIt's our duty to take good care of the old.②It takes sb+some time+to doHow long did it take you to finish the work?[1]finish单词记忆法◆记忆方法一：联想方式：肥（fi）女(ni)士(sh
It's not easy for us to study English well. 对我们来说学好英语并不容易。
It's a good idea for us to travel to the south. 去南方旅行对我们来说是个好主意。
对我来说把英语学好非常重要。to learn English well.
for相关单词意思与记忆法：
for单词意思解释释义：
prep. 为, 因为, 至于conj. 因为【计】 DOS批处理命令:对一组参数重复执行指定的命令相关词组: If it weren't for... for all for all that for life for oneself
for单词记忆法：
◆记忆方法一：
联想方式：fo：佛；r小草
为佛献小草
◆记忆方法二：
联想方式：fo：佛；r小草
记忆方法：为佛献小草
is相关单词意思与记忆法：
is单词意思解释释义：
be的现在式第三人称【计】 加下标次序, 信息系统, 国际标准, 中间系统相关词组: as is
is单词记忆法：
◆记忆方法一：
联想方式：i：我；s：美女 ；
记忆方法：我是美女。
for单词相关例句：
Destiny: A tyrant's authority for crime, and a fool's excuse for failure.——Ambrose Bierce, American writer 命运：暴君施虐的权利，傻瓜失败的借口。美国作家 比尔斯.A.
Destiny: A tyrant's authority for crime, and a fool's excuse for failure. ( A. Bierce )—— 命运是暴君施虐的权威，傻瓜失败的借口。（比尔斯）
There is no cure for birth and death save to enjoy the interval. 生和死都无法治,只有享受两者之间的间隔.
It is better to fight for good than to rail at the ill. 与其抱怨，不如积善。
It is better to fight for justice than to rail at the ill.——Alfreds Tennyson, Bitish writer与其责骂罪恶，不如伸张正义。英国作家 丁尼生
I want to bring out the secrets of nature and apply them for the happiness of man . I don't know of any better service to offer for the short time we are in the world .(Thomas Edison , American inventor) 我想揭示大自然的秘密，用来造福人类。我认为，在我们的短暂一生中，最好的贡献莫过于此了。 (美国发明家 爱迪生. T.)
Do not , for one repulse , give up the purpose that you resolved to effect .(William Shakespeare , British dramatist) 不要只因一次失败，就放弃你原来决心想达到的目的。(英国剧作家 莎士比亚.W.)
Do not, for one repulse, forgo the purpose that you resolved to effort. ( Shakespeare )—— 不要只因一次挫败，就放弃你原来决心想达到的目的。（莎士比亚）
All my possessions are for a moment of time. Elizabeth I. Queen of England 我的一切都是为了那辉煌的一刻。英国女王 伊丽莎白一世
A state which dwarfs its men ,in order that they may be more docile instruments in its hands even for beneficial purposes will find that with small men no great thing can really be accomplished.——John Stuart Mill, British economist 一个政府压制它的人民，以使他们成为自己手中的驯服工具——即便是为了正当的目的——它也会发现，靠受压制的人是不可能真正成就什么大事的。英国经济学家 穆勒J.S.
is单词相关例句：
The horizon of life is broadened chiefly by the enlargement of the heart.——H.Black American writer生活的范围是随着心胸的开阔而变宽广的。美国作家 布莱克,H.
It is no use doing what you like ; you have got to like what you do .——(Winston Churchill , British prime minister)不能爱哪行才干哪行，要干哪行爱哪行。 (美国首相 丘吉尔. W.)
Each man is the architect of his own fate. 命运掌握在自己手中。
Every man is the architect of his own fortune. 每个人都是他自己命运的建诛师。
Happiness is the interval between periods of unhappiness. 幸福是两段不幸福时期之间的间歇.
There is no cure for birth and death save to enjoy the interval. 生和死都无法治,只有享受两者之间的间隔.
It is better to fight for good than to rail at the ill. 与其抱怨，不如积善。
It is better to fight for justice than to rail at the ill.——Alfreds Tennyson, Bitish writer与其责骂罪恶，不如伸张正义。英国作家 丁尼生
To travel through the world it is necessary to have the mouth of hog, the legs of a stag, the eyes of a falcon, the ears of an ass, shoulders of a camel, and the face of an ape, and overplus, a satchel full of money and patience. 周游世界须有猪嘴巴，鹿的腿，鹰的双
If A equals sucess, then the formula is A equals X plus Y plus Z, with X being work, Y play,—— and Z keeping your mouth shut. (Einstein Albert) 如果A等于成功，那公式就是：“A等于X加Y加Z”其中X是工作，Y是游戏，Z是闭嘴不说话。（爱因斯坦 A）
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