for和of引导的不定式结构的区别

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for的用法范文

for的用法范文for是个常用词，在英语中出现频率高、含义多、用法广，可以与许多名词、形容词和动词搭配。

下面举例说明，希望对同学们学好、用准英语知识能够有所帮助。

一、用作介词。

1.表示目的，意为“为了”。

例如：Ann goes home for holidays every year with her parents.安每年与她父母一起回家度假。

此外，下列动词后跟双宾语，起间接关系作用的介词for均表目的。

get/buy/make/draw/play（播放，上演）/save（节约）/find/fly/mend/take/do sb.sth.=get/buy/make/draw/play/end/take/do sth. for sb.2.表示对象、用途，意为“对于，供，适合于”。

例如：Walking is good for health.散步有利于健康。

Here are books for children.这些是供儿童阅读的书籍。

3.表示目标、去向，意为“往，向”。

例如：I’ll leave for Shanghai.我要前往上海。

4.表示等值或交换关系，意为“兑，换”。

例如：We can get two tickets for eight yuan.用八元钱，我们可以买两张票。

Don’t put the whole English sentence word for word into Chinese.不要把整个英语句子字对字地译成汉语。

5.表示愿望、爱好、特长等，意为“对于”。

例如：He hopes for the best.他抱着乐观的希望。

The children in China long（vi.渴望） for the Mid-Autumn Festival.中国儿童盼望中秋节。

6.表示原因，意为“由于，因为”。

例如：Ann，thanks a lot for asking me to your birthday party.安，多谢你邀请我参加你的生日聚会。

2023年初中英语语法不定式句法功能详解及典型考题分析

2023年初中英语语法不定式句法功能详解及典型考题分析1.不定式做主语(1)不定式的逻辑主语由引导词来引导，这类引导词最常见的是for 和of。

这一类相应的搭配有以下：absurd, bold, brave, courageous, careful, careless, clever, wise, foolish, silly, stupid, good, nice, kind, thoughtful, considerate, greedy, generous, honest, modest, polite, rude, cruel, selfish, lazy, wicked, wrong。

如：Doctors say that walking is one of the best methods for human beings to keep fit。

医生说，走路几乎是保持健康最好的方法。

It’s so considerate of to arrange the accommodation for us。

都帮我们安排了食宿，您真是考虑的太周到了。

.(2)不定式做主语补足语：掌握常用不定式做主语补足语的句型。

注意不定式表示的动作发生的时间，并采用相应形式。

如：be said / reported / thought / believed / known / supposed + to do sth.例如：You were warned not to read in the strong light，cause it will hurt your eyesight。

不要在强光下看书，会伤害你的眼睛。

2.不定式做宾语掌握要求接不定式做宾语的动词：afford, arrange, attempt, claim, desire, determine, expect, fail, guarantee, endeavor, intend, pledge, pretend, resolve,request, swear, tend, venture。

介词 of from for by at during behind用法注意

介词of 用法注意1.表示所有关系，用以构成名词的所有格，如the gate of the school（校门），the se cret of success（成功的秘密），等。

注意以下正误表达：正：He is a friend of my father. 他是我父亲的一位朋友。

正：He is a friend of my father’s. 他是我父亲的一位朋友。

正：He is a friend of mine. 他是我的一位朋友。

误：He is a friend of me.以下表达是错误的：误：What’s the name of you?（改为…your name）误：Do you know the father of him?（改为…his father）误：I will show the books of me.（改为…my books）但是以下表达却是对的（of表示动宾关系）：正：I hate the sight of him. 我讨厌看到他。

正：His criticism of her is serious. 他对她的批评是严肃的。

2.与age, shape, size, colour, height, design, weight 等名词连用，可用作表语或定语；其中的介词of 有时可省略。

如：The two boys are (of) the same height. 这两个男孩一样高。

Here is a piece of wood (of) the right size. 这有一块木头，其大小刚好适合。

When I was (of) your age, I lived in the country. 我像你这个年纪的时候，我住在乡下。

3.与某些名词（如help, value, interest, importance等）连用，相当于形容词，可用作定语或表语。

如：It’s not of mu ch value. 这没有多大价值。

of和for和to的用法与区别

of和for和to的⽤法与区别to与for的区别For和to这两个介词,意义丰富,⽤法复杂.这⾥仅就它们主要⽤法进⾏⽐较.⼀、表⽰各种“⽬的”,⽤“for”eg.What do you study English for?你为什么要学英语?She went to france for holiday.她到法国度假去了.扩展资料 2．对于⽤“for”eg.1．She has a liking for painting.她爱好绘画 She had a natural gift for teaching.她对教学有天赋/ 表⽰赞成同情,⽤“for”eg.1.Are you for the idea or against it?你是⽀持还是反对这个想法?3.He expresses sympathy for the common people..他表现了对普通⽼百姓的.同情. 4 表⽰因为,由于（常有较活译法）,⽤“for”eg.1 Thank you for coming.2.France is famous for its wines.法国因酒⽽出名. 5．当事⼈对某事的主观看法,对于（某⼈）,对…来说（多和形容词连⽤）,⽤介词to,不⽤for.eg.He said that money was not important to him.他说钱对他并不重要.To her it was rather unusual.对她来说这是相当不寻常的. 6．和fit,good,bad,useful,suitable 等形容词连⽤,表⽰适宜,适合.⽤for.eg.Some training will make them fit for the job.经过⼀段训练,他们会胜任这项⼯作的.Exercises are good for health.锻炼有益于健康.Smoking and drinking are bad for health.抽烟喝酒对健康有害.You are not suited for the kind of work you are doing. 7.表⽰不定式逻辑上的主语,可以⽤在主语、表语、状语、定语中.1． It would be best for you to write to him.2． The simple thing is for him to resign at once.3． There was nowhere else for me to go.4． He opened a door and stood aside for her to pass.。

介词offromforbyatduringbehind用法注意

介词 of 用法注意1. 表示所有关系，用以构成名词的所有格，如the the gate gate gate of of of the the the school school （校门），the the se se cret cret of of of success success （成功的秘密），等。

（成功的秘密），等。

注意以下正误表达：注意以下正误表达：正：He He is is is a a a friend friend friend of of of my my my father. father. 他是我父亲的一位朋友。

他是我父亲的一位朋友。

正：He He is is is a a a friend friend friend of of of my my my father’s. father’s. 他是我父亲的一位朋友。

他是我父亲的一位朋友。

正：He He is is is a a a friend friend friend of of of mine. mine. 他是我的一位朋友。

他是我的一位朋友。

误：He He is is is a a a friend friend friend of of of me.me. 以下表达是错误的：以下表达是错误的：误：What’s What’s the the the name name name of of of you?you?（改为…your your name name ）误：Do Do you you you know know know the the the father father father of of of him?him?（改为…his his father father ）误：I I will will will show show show the the the books books books of of of me.me.（改为…my my books books ）但是以下表达却是对的（of 表示动宾关系）：表示动宾关系）：正：I I hate hate hate the the the sight sight sight of of of him. him. 我讨厌看到他。

常用介词用法(for-to--of)

常用介词用法(for-to--of)For的用法1.表示当作、作为”。

如：I like some bread and milk for breakfast. 我喜欢把面包和牛奶作为早餐。

What will we have for supper? 我们晚餐吃什么？2.表示理由或原因，意为因为、由于”。

如：Thank you for helpi ng me with my En glish.谢谢你帮我学习英语。

3.表示动作的对象或接受者，意为给……”、对……（而言）”。

如:Let me pick it up for you. 让我为你捡起来。

Watch ing TV too much is bad for yourhealth.看电视太多有害于你的健康。

4.表示时间、距离，意为计、达”。

如：I usually do the running for an hour in the mornin g. 我早晨通常跑步一小时。

We will stay there for two days. 我们将在那里逗留两天。

5.表示去向、目的，意为向、往、取、买”等。

如: Let ' s go for a walk.我们出去散步吧。

I came here for my schoolbag. 我来这儿取书包。

I paid twenty yua n for the dicti on ary. 我花了20元买这本词典。

6.表示所属关系或用途，意为为、适于……的”。

如:It ' s time for school.到上学的时间了。

Here is a letter for you. 这儿有你的一圭寸信。

7.表示支持、赞成”。

如：Are you for this pla n or aga inst it? 你是支持还是反对这个计划?8.用于一些固定搭配中。

女口:Who are you waiting for? 你在等谁？For example, Mr Gree n is a ki nd teacher. 比如,格林先生是一位心地善良的老师。

of-sb及for-sb的区别教学文案

o f-s b及f o r-s b的区别it is+adj+for sb和it is+adj+of sb含义及区别一.导入:详见例子It is kind of you to help me.你能帮我太好了.（kind 的是you）It is beneficial for you to do sports.运动对你有益.（beneficial的是do sports）二.表达含义:1.it is+adj+for sb. 就是“做…对某人(for sb)来说怎么样(adj)”2.it is+adj+of sb. 就是“做…说某人(of sb)怎么样(adj)”三.辨析:it is+adj+for sb和it is+adj+of sb.①“It’s +adj.+of+sb.+不定式”表示“某人(做某事)怎么样” 一般用表示人物的性格,品德.表示主观感情或态度的形容词.若形容词是描述逻辑主语(行为者)的性格、品质特征的形容词.这个adj.是用来形容sb.的.of后的宾语能与前面的形容词构成主表关系. 这类形容词有:good(好的),kind(友善的),nice(友好的),polite(有礼貌的),clever(聪明的),foolish(愚蠢的),lazy(懒惰的), right(正直的)careful(细心的),careless(粗心的),right(正确的),wrong(错误的)bad,brave,cruel,honest,naughty,wise,rude等.用of sb.例如:It’s very kind of you to help me.(=You are very kind to help me.)你能帮助我,真好.It's very kind of you to look after my cat.你能照看我的猫,真好.It’s kind of you to say so.(=You are kind to say so)It’s very rude of her to say such words.(=She is very rude to say such words.)她说这样的话,真粗鲁.It’s foolish of him to go alone.(=He is foolish to go alone.)他单独出去太傻了.It's very nice of you to help me. 你来帮助我,你真是太好了.It’s clever of you to work out the maths problem. It's very kind of you to look after my cat.你真聪明,解出了这道数学题.②“It’s+adj.+for+sb.+不定式”表示“做某事对某人来说怎么样”.常用于表示事物的特征特点,表示客观形式的形容词.若形容词仅仅是描述事物,不是对不定式行为者的品格进行评价,用for sb.这类形容词有:important(重要的),necessary(必要的),difficult(困难的),easy(容易的),hard(艰难的),dangerous(危险的),safe(安全的),useful(有益的),pleasant(舒适的),interesting(有趣的),impossible(不可能的), right(正确的) likely(可能的)等.用for sb,例如:It’s not easy for them to learn a foreign language.(=To learn a foreign language is not easy for them.)对于他们来说学好一门外语不容易.It's very hard for him to study two languages(=To study two languages is very hard for him).对他来说学两门外语是很难的.It’s very important for students to listen to teachers carefully.(=To listen to teachers carefully is very important for students.)对于学生来说上课认真听老师讲课是非常重要的.It’s necessary for us to get to school on time.(=To get to school on time is necessary for us.)对于我们来说按时到校是非常必要的.It’s important for her to come to the party.=It is important that she should come to the party.对她来说来参加聚会很重要.It’s very dangerous for children to cross the busy street.对孩子们来说,穿过繁忙的街道很危险.It’s difficult for us to finish the work. 对我们来说,完成这项工作很困难.③注意:for 与of 的辨别方法:I.区别:1.含义上的区别:两种句型的主谓关系不一样.It is+adj+for sb to do. adj应该是对做这件事的评价;It is+adj+of sb to do sth. adj应该是对做这件事的人的评价,adj多用形容人的.①It is +adj+for sb to do sth. 形容词(for前的)是多用来形容一件事情(动词不定式所表示的动作),即修饰的是 to do sth. adj是do sth.的属性; sb.跟adj.没有直接联系. for是指干谋事会如何.It's plesant for us to take a walk after supper.②It is+adj+of sb to do sth. 形容词(of前的)是多用来形容人的;修饰的是介词of后面接的宾语. sb.跟adj.有直接联系.③实例辨析:It's very difficult for me to do it. (difficult 指事情很难)It's very kind of you to do it for me. (kind指人的品质好)It is more convenient for him to walk directly.对他来说,直接走过来比较便捷.(convenient指事情很便捷) It is clever of him to come down without ropes.他很聪明,不用绳子就能下来.(convenient指指人很聪明) 2.逻辑结构上的区别:方法:取介词of/for后的代词作逻辑主语和介词前边的形容词作表语,造个句子.句子结构:“逻辑主语+be+形容词”.即:sb.is adj to do sth (不定式作句子的状语).如果道理上通顺用of,不通则用for.如:It is good for you to look at this book. 是说: ....对你有好处. 看这本书对你有好处.It is nice of you to give me such advice.是说: 你很好,感激你给我提供建议.*提取逻辑主语和形容词造句:It is nice of you to help me. 提取you与nice可构成you are nice. (通顺,所以应用of).It's very kind of you to help me.提取you与kind可构成you are kind. (通顺,所以应用of).It is good for you to look at this book.提取you与good可构成you are good(有好处的). (不通,所以应用for) It is hard for him to study two languages.提取he与hard可构成he is hard(困难的). (不通,所以应用for)四.注意:of sb. 的句型通常都可转换为不定式作状语的句子,但for sb.句型不可以.It’s very nice of you to offer me a seat.= You are nice to offer me a seat. 十分感谢你给我让座.It is careless of him to lose so many things.= He is careless to lose so many things. 他丢了这么多东西,真是太粗心了.It’s very important for you to practise your oral English in daily life.在日常生活中练习你的英语口语非常重要的。

英语of和for的用法与区别

英语of和for的⽤法与区别
for的意思是“为了”，为了⼀般与decorate，help，thank等及物动词相连接；of的意思是“的”，后⾯⼀般跟名词，它还连接量词和不可数名词。

表⽰“……的”含义时，应根据不同的关系选⽤不同的介词。

若表⽰“所有，所属”关系时，⽤介词of
若表⽰“解释，说明”关系时，⽤介词for
扩展资料
当不定式短语作主语，谓语是系表结构(即“It+be+adj +不定式”句型)时，若不定式动词需要逻辑主语时，其引导词可以是of也可以是for。

⼆者的选择主要取决于该句型中的形容词。

若这个形容词是描述不定式前的`逻辑主语的性格、品质和特征，不定式前的逻辑主语就应⽤介词of引导。

可⽤于该句型的形容词有：kind，brave，clever，foolish，polite，honest等。

若这个形容词是描写事物性质，⽽不是对逻辑主语的品格进⾏评价时⽤介词for引导.可⽤于该句型的形容词有：difficult，easy，hard，important，necessary，impossible等。

人教版英语八年级上册08动词不定式(基础讲解)

动词不定式【概念引入】1. 动词不定式名言：（1）动词不定式作表语To lose is to learn. 失败就是学习。

（2）动词不定式作主语It is better to give than to take. 给予比接受更好。

（3）不定式作宾语Expect to be treated as you have treated others.你怎样待别人，就指望别人怎样待你。

（4）不定式作宾补Adversity causes some men to break，others to break records.逆境使一些人崩溃，也使一些人破记录。

（5）不定式作定语There is a time to talk and a time to act.该说的时候说，该做的时候做。

（6）不定式作目的状语To find the exact answer，one must first ask the exact question.要找到确切的答案，首先必须提出确切的问题。

2. 动词不定式定义：动词不定式是一种非谓语形式（不能作谓语），基本形式是to do形式(to是不定式符号的标志，无意义，可以不翻译)肯定式：to + 动词原形否定式：not to + 动词原形【用法讲解】1.动词不定式的特征动词不定动式是一种非谓语动词形式，它没有人称和数的变化，在句子中不能作谓语，但可以作除谓语之外的其它任何句子成分（主语、表语、宾语、宾语补足语、定语和状语）；动词不定式具有名词、形容词和副词的特征，同时还保持动词的某些特点，既可以有自己的宾语和状语，动词不定式和它的宾语和状语构成不定式短语。

2. 动词不定式在句子中的作用动词不定式是由to+动词原形构成，在句中起名词，形容词和副词的作用，可以担任除谓语以外的其它任何成分。

（1）动词不定式作主语。

例如：To master a language is not an easy thing.掌握一门语言不是一件容易的事情。

冀教版初中英语八年级动词不定式(讲解+练习)(1)

动词不定式1. 动词不定式位置：（1）动词不定式作表语To lose is to learn. 失败就是学习。

Ψ表语表语是谓语的一部分，它位于系动词如be之后，说明主语身份，特征，属性或状态。

一般由名词，代词，形容词，副词，不定式，介词短语等充当。

I am a teacher.（2）动词不定式作主语It is better to give than to take. 给予比接受更好。

Ψ主语主语表示句子主要说明的人或事物，一般由名词，代词，数词，不定式等充当。

He likes watch TV.（3）不定式作宾语Expect to be treated as you have treated others.你怎样待别人，就指望别人怎样待你。

Ψ宾语宾语表示动作行为的对象，跟在及物动词之后。

能作宾语的有名词，代词，数词，动词不定式等。

We all like play basketball.√.I’ve worked with children before, so I know what ________ in my new job.A. expectedB. to expectC. to be expectingD. expects（4）不定式作宾补Adversity causes some men to break，others to break records.逆境使一些人崩溃，也使一些人破记录。

Ψ宾补就是宾语补足语，就是补充说明宾语的。

I know you are a student good at maths.(在这个句子中，good at maths 就是补语) I know you are a student who is good at maths.(宾语补语也可以是句子)I see you crossing the street.(还可以是-ing 形式)√. I saw him _______ out of the room.A. goB. had goneC. has goneD. goes（5）不定式作定语There is a time to talk and a time to act.该说的时候说，该做的时候做。

It 形式主语跟of和for的区别

It 形式主语跟of和for的区别For many students, it is easy to get to school. 对许多学生而言, 到校很容易。

【思一思句型剖析】(1)“It is +adj. +动词不定式短语”句型中, it在句中作形式主语, 而真实主语是后面的动词不定式短语。

有时动词不定式有自己的逻辑主语, 常由“for sb 或of sb. ”构成。

(2)it作形式主语时常用两种句式结构:It is+adj. +for sb. +to do sth. 形容词描述事物的特征、性质, 如easy, difficult, interesting, funny, dangerous, important, impossible, useful等It is+adj. +of sb. +to do sth. 形容词描述行为者的性格、品质, 如kind, friendly, nice, right, clever, polite, careless, cute等辨异: It’s interesting for us to play games here in the park, but I think it’s impolite of us to make so much noise. 我们在公园里玩游戏是很有意思, 但我觉得我们这么吵闹是不礼貌的。

e.g It is easy for me to learn math.It is impossible for you to enter a good college.It is very kind of you to help me with physics.It’s dangerous for you to swim alone in the river.It is friendly of you to show me the way to the police station.It is more than nice of you to help the old.一．Fill in the blanks:1. It is not easy _________ (for/of)us ________(learn) a foreign language.2. It’s useful ________(for/of) us to use a map when we go to a new city.3. Is ______ necessary to complete the design before The National Day?4. It is _________(possibly) _______(for/of)us to fly to the moon in a spaceship.5. It’s very kind ________(for/of) you _______(help) me with my homework.6. It is very polite ________(for/of) him not _________(speak) loudly in public.7. It is bad for your teeth ________(eat) so much chocolate.8. It is good _______(for/of) your health ______(take) exercise every day.9. It’s________(importance) for her to get good grades in every subject.10. It’s________(difficulty) for Jane to get along well with others. She has such a bad temper.二．True or False:1. This is impossible for us to get across such a narrow bridge.2. Sometimes it’s rudely of me to yell at my parents.3. It’s good for your health taking exercise regularly.4. It’s cute for him to do such a thing.5. It’s danger for him to go into a forest alone.三．Test Fill in the blanks:1. It is foolish ______ (for/of)you _____________(give up) such a good chance.2. It is necessary _______(for/of) college students ________(master) at least a foreign language.3. It is careless ________ (for/of)you ________(make) such a mistake.4. It’s polite ________ (for/of)you _________(help) the woman cross the road.5. It is necessary ______ us to learn every subjects.6. It’s impossibly ____ her to get over this difficulty.True or False:1. My parents always say that it’s dangerous of a girl to go out late at night.2. It’s more than fool of her to trust this guy so quickly.3. It’s bad of your health to stay at home watching TV all the day.4. It’s important for you mastering a foreign language.5. It’s friendly of you help me to get this important information.。

动词不定式的10种常见结构_吴安运

常见结构词不定式的10种一般来说，动词不定式由不定式符号“to+动词原形”构成，在句中不能单独作谓语，也不受主语人称和谓语动词的时态变化的干扰。

动词不定式具有动词的性质，有形式的变化，也可以有自己的宾语和状语，从而构成动词不定式短语。

动词不定式具有名词、形容词或副词的某些特点，在句中可以作除谓语以外的所有句子成分，包括主语、宾语、宾语补足语、表语、定语和状语。

现就动词不定式的10种常见结构进行一下归纳。

1.“疑问词+不定式”结构不定式可以和疑问代词who ，whom ，what ，which 和疑问副词when ，where ，how 以及连词whether 等连用，表示义务或可能性，在句中作主语、表语、宾语和同位语等，可分别扩展为相对应的名词性从句。

Where to hold the meeting is not known yet.在哪里开会还不知道呢。

（主语=where we should hold the meeting ）They will teach us how to operate the machine.他们将教我们怎样使用这台机器。

（宾语=how we should operate the machine ）The question is which way to take.问题是采用哪一个方法。

（表语=which way we should take ）She had no idea how to help him.她不知道该如何去帮助他。

（同位语=how she should help him ）【注意】英语中一般不用why to do 这一结构。

2.“形容词+不定式”结构英语中的形容词可以和动词不定式搭配，构成一些常用的句子结构。

□吴安运伴你走进课堂课程导学课程导学（1）too...to...结构too...to...结构常用来表示结果，意思是“太……以致不能……”，是用肯定的形式来表达否定的意思。

高中英语---不定式for结构和of结构的区别

不定式for结构与of结构的区别先请看以下两个句子:It is difficult for a young man to speak of his view of life.年轻人畅谈自己的人生观是困难的。

It is kind of you to help me.谢谢你帮助我。

不难看出,这两句中的it都是形式主语，介词for和of都是用来引起不定式的逻辑主语。

第一句中不定式to speak of his view of life的逻辑主语是a young man;第二句中不定式to help me 的逻辑主语是you。

为了行文方便,我们不妨把上面第一句中的斜体部分叫做不定式for结构,把第二句中的斜体部分叫做不定式of结构。

这两种结构在句中的用法是有区别的,其区别主要表现在以下几个方面。

一．不定式for结构在句子中可用作主语、宾语、表语、定语、状语等。

例如:How would it be for you to take charge of this class?你负责这个班怎么样?(主语)I’d like for you to come here.我很想你来这儿(宾语)The first thing would be for us to look for a shelter since it was raining so heavily.雨下得这么大,要紧的事是我们找个避雨的地方。

(表语)There is a lot of work for us to do.我们有很多工作要做。

（定语）The word is too difficult for me to pronounce well.这个词的发音太难了,我发不准。

(状语)而不定式of结构在句子中只能用作主语。

例如:It’s nice of you to invite me.你邀请我,你真好。

It’s awfully good you of to come to see me off at the station.你来车站送我,太好了。

of sb及for sb的区别

it is+adj+for sb和it is+adj+of sb含义及区别一.导入:详见例子It is kind of you to help me.你能帮我太好了.（kind 的是you）It is beneficial for you to do sports.运动对你有益.（beneficial的是do sports）二.表达含义:1.it is+adj+for sb. 就是“做…对某人(for sb)来说怎么样(adj)”2.it is+adj+of sb. 就是“做…说某人(of sb)怎么样(adj)”三.辨析:it is+adj+for sb和it is+adj+of sb.①“It’s +adj.+of+sb.+不定式”表示“某人(做某事)怎么样” 一般用表示人物的性格,品德.表示主观感情或态度的形容词.若形容词是描述逻辑主语(行为者)的性格、品质特征的形容词.这个adj.是用来形容sb.的.of后的宾语能与前面的形容词构成主表关系. 这类形容词有:good(好的),kind(友善的),nice(友好的),polite(有礼貌的),clever(聪明的),foolish(愚蠢的),lazy(懒惰的), right(正直的)careful(细心的),careless(粗心的),right(正确的),wrong(错误的)bad,brave,cruel,honest,naughty,wise,rude等.用of sb.例如:It’s very kind of you to help me.(=You are very kind to help me.)你能帮助我,真好.It's very kind of you to look after my cat.你能照看我的猫,真好.It’s kind of you to say so.(=You are kind to say so)It’s very rude of her to say such words.(=She is very rude to say such words.)她说这样的话,真粗鲁.It’s foolish of him to go alone.(=He is foolish to go alone.)他单独出去太傻了.It's very nice of you to help me. 你来帮助我,你真是太好了.It’s clever of you to work out the maths problem. It's very kind of you to look after my cat.你真聪明,解出了这道数学题.②“It’s+adj.+for+sb.+不定式”表示“做某事对某人来说怎么样”.常用于表示事物的特征特点,表示客观形式的形容词.若形容词仅仅是描述事物,不是对不定式行为者的品格进行评价,用for sb.这类形容词有:important(重要的),necessary(必要的),difficult(困难的),easy(容易的),hard(艰难的),dangerous(危险的),safe(安全的),useful(有益的),pleasant(舒适的),interesting(有趣的),impossible(不可能的), right(正确的) likely(可能的)等.用for sb,例如:It’s not easy for them to learn a foreign language.(=To learn a foreign language is not easy for them.)对于他们来说学好一门外语不容易.It's very hard for him to study two languages(=To study two languages is very hard for him).对他来说学两门外语是很难的.It’s very important for students to listen to teachers carefully.(=To listen to teachers carefully is very important for students.)对于学生来说上课认真听老师讲课是非常重要的.It’s necessary for us to get to school on time.(=To get to school on time is necessary for us.)对于我们来说按时到校是非常必要的.It’s important for her to come to the party.=It is important that she should come to the party.对她来说来参加聚会很重要.It’s very dangerous for children to cross the busy street.对孩子们来说,穿过繁忙的街道很危险.It’s difficult for us to finish the work. 对我们来说,完成这项工作很困难.③注意:for 与of 的辨别方法:I.区别:1.含义上的区别:两种句型的主谓关系不一样.It is+adj+for sb to do. adj应该是对做这件事的评价;It is+adj+of sb to do sth. adj应该是对做这件事的人的评价,adj多用形容人的.①It is +adj+for sb to do sth. 形容词(for前的)是多用来形容一件事情(动词不定式所表示的动作),即修饰的是to do sth. adj是do sth.的属性; sb.跟adj.没有直接联系. for是指干谋事会如何.It's plesant for us to take a walk after supper.②It is+adj+of sb to do sth. 形容词(of前的)是多用来形容人的;修饰的是介词of后面接的宾语. sb.跟adj.有直接联系.③实例辨析:It's very difficult for me to do it. (difficult 指事情很难)It's very kind of you to do it for me. (kind指人的品质好)It is more convenient for him to walk directly.对他来说,直接走过来比较便捷.(convenient指事情很便捷) It is clever of him to come down without ropes.他很聪明,不用绳子就能下来.(convenient指指人很聪明) 2.逻辑结构上的区别:方法:取介词of/for后的代词作逻辑主语和介词前边的形容词作表语,造个句子.句子结构:“逻辑主语+be+形容词”.即:sb.is adj to do sth (不定式作句子的状语).如果道理上通顺用of,不通则用for.如:It is good for you to look at this book. 是说: ....对你有好处. 看这本书对你有好处.It is nice of you to give me such advice.是说: 你很好,感激你给我提供建议.*提取逻辑主语和形容词造句:It is nice of you to help me. 提取you与nice可构成you are nice. (通顺,所以应用of).It's very kind of you to help me.提取you与kind可构成you are kind. (通顺,所以应用of).It is good for you to look at this book.提取you与good可构成you are good(有好处的). (不通,所以应用for) It is hard for him to study two languages.提取he与hard可构成he is hard(困难的). (不通,所以应用for) 四.注意:of sb. 的句型通常都可转换为不定式作状语的句子,但for sb.句型不可以.It’s very nice of you to offer me a seat.= You are nice to offer me a seat. 十分感谢你给我让座.It is careless of him to lose so many things.= He is careless to lose so many things. 他丢了这么多东西,真是太粗心了.It’s very important for you to practise your oral English in daily life.在日常生活中练习你的英语口语非常重要的。

for sb与of sb区别

It is +adj+for sb to do sth与It is+adj+of sb to do sth有何区别？It is+adj.+of sb. +to do sth中的adj.跟sb.有关,这个adj.是用来形容sb.的,表示某人这么做真是太adj.了．你会发现在这个句型中你把sb.和adj.提出来可以造个句sb. is(are) adj.如It‘s very kind of you to help me.把里面的sb.和adj.提出来可以发现you are kind是说得通的.而It is +adj.+for sb.+to do sth表示做某事对某人来说很adj.这里的adj.是do sth.的属性里面的sb.跟adj.没有直接联系如It‘s difficult for you to deal with the problem.你就不能说you are difficult了吧这就是怎么决定句子中的介词用of还是用for的方法若形容词是描述不定式行为者的性格、品质的，如kind，good，nice，right，wrong，clever，careless，polite，foolish等，用of sb.。

It’s very kind of you to help me.你能帮我，真好。

It’s clever of you to work out the maths problem.你真聪明，解出了这道数学题。

若形容词仅仅是描述事物，不是对不定式行为者的品格进行评价，用for sb.，这类形容词有difficult，easy，hard，important，dangerous，（im）possible等。

It’s very dangerous for children to cross the busy street.对孩子们来说，穿过繁忙的街道很危险。

It’s difficult for us to finish the work.对我们来说，完成这项工作很困难。

keep的用法及of、forsb.句型区别

keep‎的用法1. 用作及物动词‎①意为"保存；保留；保持；保守"。

如：Could you keep these letter‎s for me, please‎?你能替我保存‎这些信吗？②意为"遵守；维护"。

如：Everyo‎n e must keep the rules. 人人必须遵守‎规章制度。

The teache‎r is keepin‎g order in class.老师正在课堂‎上维持秩序。

③意为"使……保持某种(状态、位置或动作等‎)"。

这时要在ke‎e p的宾语后‎接补足语，构成复合宾语‎。

其中宾语补足‎语通常由形容‎词、副词、介词短语、现在分词和过‎去分词等充当‎。

如：例：‎keep our classr‎o om clean and tidy.(形容词)我们应保持教‎室整洁干净。

You'd better‎keep the child away from the fire.(副词)你最好让孩子‎离火远一点。

The bad weathe‎r keeps us inside‎the house.(介词短语)坏天气使我们‎不能出门。

Don't keep me waitin‎g for long.(现在分词)别让我等太久‎。

The other studen‎t s in the class keep their eyes closed‎.(过去分词)班上其他同学‎都闭着眼睛。

2. 用作连系动词‎构成系表结构‎：keep＋表语，意为"保持，继续(处于某种状态‎)"。

其中表语可用‎形容词、副词、介词短语等充‎当。

如：例：You must look after yourse‎l f and keep health‎y.(形容词)你必须照顾好‎自己，保持身体健康‎。

Keep off the grass.(副词)请勿践踏草地‎。

keep的用法及of、forsb.句型区别

keep的⽤法及of、forsb.句型区别keep的⽤法1. ⽤作及物动词①意为"保存；保留；保持；保守"。

如：Could you keep these letters for me, please? 你能替我保存这些信吗？②意为"遵守；维护"。

如：Everyone must keep the rules. ⼈⼈必须遵守规章制度。

The teacher is keeping order in class.⽼师正在课堂上维持秩序。

③意为"使……保持某种(状态、位置或动作等)"。

这时要在keep的宾语后接补⾜语，构成复合宾语。

其中宾语补⾜语通常由形容词、副词、介词短语、现在分词和过去分词等充当。

如：例：We should keep our classroom clean and tidy.(形容词)我们应保持教室整洁⼲净。

You'd better keep the child away from the fire.(副词)你最好让孩⼦离⽕远⼀点。

The bad weather keeps us inside the house.(介词短语)坏天⽓使我们不能出门。

Don't keep me waiting for long.(现在分词)别让我等太久。

The other students in the class keep their eyes closed.(过去分词)班上其他同学都闭着眼睛。

2. ⽤作连系动词构成系表结构：keep＋表语，意为"保持，继续(处于某种状态)"。

其中表语可⽤形容词、副词、介词短语等充当。

如：例：You must look after yourself and keep healthy.(形容词)你必须照顾好⾃⼰，保持⾝体健康。

Keep off the grass.(副词)请勿践踏草地。