I have a friend to help me,这个介词为什么是to?
作者&投稿：暨婕 （若有异议请与网页底部的电邮联系）
in Beijing 是介词短语做定语修饰 friend，原因是：朋友是名词，修饰名词的是定语，就这么简单。它怎可能是地点状语呢？ 试比较：I have a book in my bag. 句式结构完全一样。in my bag 不可能是状语。当然，这类介词短语做定语一定是跟在被修饰成分的后面，不能随便放在句首。定语不能修饰动词 have，不仅语法不允许，而且逻辑上也不通。到底是“有”在北京，还是“朋友”在北京，不是很清楚吗？如果一个人在北京说：I have a friend in Paris. 想想看，in Paris 是修饰 have 还是 friend 不就更清楚了吗？再想想，have 有，表示一种归属和拥有的状态，并非一个实际的动作，怎么可以用地点状语来修饰呢？ 要是真的可以，在前面的例句里，你岂不是一定要钻进书包里去了。希望这些足够把问题讲清楚了。
To 和 for 的区别：一般情况下, to后面常接对象; for后面表示原因与目的为多。
1、to sb.表示对某人有直接影响比如，食物对某人好或者不好就用to;
2、for表示从意义、价值等间接角度来说，例如对某人而言是重要的，就用for。
3、for和to这两个介词，意义丰富，用法复杂。
扩展资料
for
英语单词简介
for后加动名词
人称加宾格
to
prep.
向，往，给...，于...，直到...为止，在...之前，比，对，[表示程度、范围] 到，达
情态动词后不加to直接加v.（原）
行为动词加to do sth.（如：need)
(表示时间)到, 直到, 在?到来之前, 离?； 例：from seven to ten
(表示方向)朝, 往, 通向
(表示状态)紧贴着, 紧靠着, 对着；
(表示对象)对, 对于, 对?来说；
(表示比较)比, 相对于；
(表示方位)在?方向[方位], 处于?顺序；
(表示距离)离, 距离；
(表示目标)到达, 直到；
(表示结果)转换为, 转变为, 趋于
这里是作定语的用法。
翻译：我有一个可以帮助我的朋友。
动词不定式作定语时，其语态形式与其所修饰的名词有重要的关系。 ��
① 一般说来，当不定式与它所修饰的名词属于主，用主动形式。
如： He is not a man to bow before difficulties． ��
在此句中，动词不定式to bow与它所修饰的名词 man是主谓关系，即bow是由man所发出。所以动词不定式采用主动形式。 ��
②当不定式与它所修饰的名词属于动宾关系时一般用被动形式。 ��
如：Are you going to attend the meeting to be held by the teaching office？ ��
在此句中，动词不定式to be held与它所修饰的名词meeting是动宾关系，即meeting是held的宾语。所以动词不定式采用被动形式。 ��
2．动词不定式作定语时，除了与它所修饰的名词有重要的关系之外，还与它所在的主句的主语与宾语有紧密的联系。 ��
①只要动词不定式与它所在的主句的主语构成，不论与它所修饰的名词是何关系，都用主动形式： ��
如：She usually has a lot of meeting to attend． ��
此句中，she与attend是主谓关系；即使meeting与attend是动宾关系，而动词不定式仍采用主动形式。 �� ��
②动词不定式如果与它所在的主句的宾语能构，不论它与所修饰的名词是何关系，都采用主动形式： ��
如：He will show you the right path to take． �
此句中，动词不定式to take与此句中的宾语you构成了主谓关系，因此动词不定式仍采用主动形式。 �
3．当动词不定式与它所修饰的名词，以及所在的句子的主语或宾语都不存在主谓关系也没有动宾关系的时候，一般采用主动形式。 �
如：This is the best way to solve the problem． �
4．某些动词如：let、blame、seek、lose等，其不定式作定语时，被动形式与主动形式都可以使用，意义没有什么区别，在口语中多数采用主动的形式，表示被动的含义。 �
如：I have a lot of house to let．( to be let） ���
There is no time to lose．( to be lost） �
5．在There be句型中，有时，动词不定式作定语时的被动形式与主动形式表示相同的含义但有时却表示不同的含义。因此我们要根据其特定的语境来确定其形式。 �
如：①There are not many things to take care（意：没有什么事情要照料了。） ���
There are not many things to be taken care of （意：没有什么事情要照料了。） �
由此看来，以上两个语句在意义上没有什么区别。 ��
又如：②There is nothing to do now．(意：没有什么要做。）
There is nothing to be done now． (意：没有办法了。） �
③There is nothing to see．(意：没有什么好看的。） ��
There is nothing to be seen．(意：什么也没看见。） ��
以上两组语句在意义上都存在一定的差别。所以，同学们在做练习的时候，不仅要仔细分析句子成份之间的关系，同时也要弄清句子的特定语意，这样才能做到准确无误。
又全又快!分给我拉!
to的用法:
一：表示相对，针对
be strange (common, new, familiar, peculiar, distinct, sensitive, immune, vulnerable, indispensable) to
Air is indispensable to life.
Aircrafts are vulnerable to interference caused by radiation.
This injection will make you immune to infection.
二：表示对比，比较
1：以-ior结尾的形容词，后接介词to表示比较，如：superior ,inferior,prior,senior,junior
The quarrel happened prior to my arrival.
2: 一些本身就含有比较或比拟意思的形容词，如equal，similar，equivalent，analogous
A is similar to B in many ways.
3：表示一些先后顺序的形容词，如：second,subsequent,next,preliminary,preparatory
Subsequent to the war,they returned to their hometown.
4: to也偶尔出现在个别动词之后,与动词形成固定词组,表示比较,如:prefer to,compare to,in contrast to
compare to sth.表示比喻或比拟,而compare with sth.表示比较,如:
World is usually compared to a stage
Compared with his past,he has changed a lot.
Prefer的正确句型是:prefer A to B或prefer doing A to doing B,但当prefer后接动词不定式时,表示比较的介
词to就要改成rather than ,如:
The undaunted soldier preferred death to surrender.
Many people prefer spending money to earning money.
They prefer to pursue careers rather than remain home as house wives.
5: to与及个别的名词构成比较之意,如:alternative
Going to an under water concert is a great alternative to going to dinner.
三: 表示修饰关系
1: 表示回复,反应意思的词,如:answer to question,
solution to problem,response to inquiry,reaction to proposal,reply to letter
2: 表示建筑构件的词汇,如: entry,entrance,approach,access,passage,exit,vent,path
the approach to a bridge引桥
the approach to science
Half of the population was estimated to have no access to the health service.
The access to education 接受教育的机会
The access to medical care 享受公费医疗的权利
3: 表示人物职位和官衔的词,如:assistant to manager, ambassador to Spain, successor to tradition, heir to
throne,deputy to the National People’s Congress
advisor to the Prime Minister
4: 表示权利和许可的词汇,如:right,admission
The employee finally got the admission to the boardroom.
Everyone has an equal right to ……..
5: 表示栅栏或障碍的词汇,如:bars to development,the barrier to progress
6: 表示与书籍,文本相关的词,如:introduction to passage.
7: 表示恭喜或是祝贺,如:
The director proposed a toast to the health of the guests.
Let’s drink to Dick’s success in business
8: 另外还有一些名词符合这种用法,有的具有两者息息相关,缺一不可的含义.如:key to door,invitation to
party,
guide to action,limitation to life,accessory to school
四: to还具有依据,伴随,和着节奏的含义,如:sing to piano, chance to the tune, stamp to the rhythm of the song, add salt to taste
（一）：表示相关联，相连接，如：be related to,be relative to,in relation to,be relevant to,link to
Investigate all the facts related to the problem.
People often linked walth to happiness.
（二）：表示反对和赞同。
1：to引导的表示反对，抗拒，对抗意义的词组。Be opposed to,be oppsist to,be contrary to,be adverse to,be
resistant to,be contradictory to,object to,oppose to,deny tp,be aline to
These buildings are resistant to earthquake.
They are to tally opposed to any changes being made in the plans.
2: to引导的表示同意，赞同意义的词组：consent to,subseribe to,
The employer consented to give him a salary raise.
表示调整，使符合，使适应的含义，如：adapt to,commodate to, adjust to,conform to,habituate to,fit to,suit
to,correspond to,cater to
She tried to habituate herself to the style of plain living.
Your action should conform to the interests of the people.
They offered various foods to cater to the need of customers.
His words doesn’t fit to his actions.
Suit your writing style to the masses.
3: 表示投降,屈服,服从的含义,如:be subject to,be subordinate to,submit to,subject to,surrender to,give in
to,confess to,admit to.
The minority is subordinate to the majority少数服从多数
Countries nearby oceans are always subject to earthquake.
He confessed to having robbed the woman of her wallet.
We’re not the kind of people to yield to any military threat.
五: 表示趋势或倾向,如:tend to,be prone to,be inclined to,be apt to,be liable to
He’s liable to seasickness.
You are liable to come to wrong conclusion.
六: 表示对事情的坚持与执着,如:sick to,hold o,adhere to,cling to
He still holds on to his original views.
七: 表示约束,局限,如:limit to,confine to,resrict to
He’s confined to the house by illness.
He confined his remarks to scientific mangement.
八: 表示一种习惯或是一种适应性,如:get (be) to,used to,be accustomed to
Finally,the students got used to my teaching method.
九: 表示起因和原由,如:owing to,due to,thanks to,attribute to,come down to
The flight was cancelled due to the thick fog.
The famous artist attributed his success to his wife.
十: 表示目的或结果,如:aim to,lead to,give rise to
I aim to be an excellent college teacher.
His conceit lead to his failure.
These bad condition has given rise to a lot of crises
十一: 表示命运,注定,如:be doomed to,be destined to,
All military adventures by the two super powers are doomed to fail.
十二: 表示数量上的积累或增加,如:in addition to,add to,amount to
In addition to relief supplies,he also presented with some money.
The annual output of steel amounts to 1200 tons.
十三: 表示全身心投入的含义,如:be addicted to,contribute to,devote to,commit to
He is determined to devote all his life to his.
十四: 表示展望或是回顾,如:look forward to反date back to
The church dates back to the 13th century.
十五: 表示方位概念.如:close to,next to
I don’t like wool next to my skin.
十六: 表示依靠或借助,如:resort to,turn to,appeal to,
He usually appeals to arms to settle the territory dispute.
十七: 表示有关注,关于: as to,with regard to
十八: 表示关注或重视,如:pay attention to,attach to,
We should attach primary importance to job training.
十九: 表示依据或是根据,如:according to,in proportion to
According to today’s newspaper,the match will be postponed.
The lending countries subscribe towards capital stock in proportion to heir economic importance.
二十: 表示应该或必须含义的句式, 如:
It’s time to get up.
We are supposed to get here at seven.
It’s up to this country to ban nuclear weapons.
常用词组
respond to（反应）, appeal to（吸引）, catch on to（理解）, listen to （收听）,used to（过去常常）, give birth to,attend to（照料）, see to（负责）, be entitled to（有权）, belong to（属于）, come to（苏醒）, stand up to（勇敢面对）, help oneself to（请自便）, refer to,to the point（切题）,
Train them to stand up to any severe test in hard.
The ticket entitled you to a free meal in the luxury hotel.
See to it that the children get a hot meal after their swim.
You will catch on to the job shortly after wards.
People usually refer to television for up-to-the-minute news.
介词的用法:
上午、晚要用in，at黎明、午夜、点与分。
年、月、年月、季节、周，阳光、灯、影、衣、冒in。
将来时态in...以后，小处at大处in。
有形with无形by，语言、单位、材料in。
特征、方面与方式，心情成语惯用in。
介词at和to表方向，攻击、位置、恶、善分。
日子、日期、年月日，星期加上早、午、晚，
收音、农场、值日on，关于、基础、靠、著论。
着、罢、出售、偷、公、假，故意、支付、相反，准。
特定时日和"一……就"，on后常接动名词。
年、月、日加早、午、晚，of之前on代in。
步行、驴、马、玩笑on，cab，carriage则用in。
at山脚、门口、在当前，速、温、日落、价、核心。
工具、和、同随with，具有、独立、就、原因。
就……来说宾译主，对、有、方状、表细分。
海、陆、空、车、偶、被by，单数、人类know to man。
this、that、tomorrow，yesterday，next、last、one。
接年、月、季、星期、周，介词省略已习惯。
over、under正上下，above、below则不然，
若与数量词连用，混合使用亦无关。'
beyond超出、无、不能，against靠着，对与反。
besides，except分内外，among之内along沿。
同类比较except，加for异类记心间。
原状because of,、 owing to、 due to表语形容词
under后接修、建中，of、from物、化分。
before、after表一点, ago、later表一段。
before能接完成时，ago过去极有限。
since以来during间，since时态多变换。
与之相比beside，除了last but one。
复不定for、找、价、原，对、给、段、去、为、作、赞。
快到、对、向towards，工、学、军、城、北、上、南。
but for否定用虚拟，复合介词待后言。
ing型由于鉴，除了除外与包合。
之后、关于、在......方面，有关介词须记全。
in内to外表位置，山、水、国界to在前。
to在这里不是介词，是连词，应为介词后要变成helping，这句话的意思是 我要一个朋友来帮助我，to表目的(have to do sth.表示要，叫，使)
have sb to do sth让某人做谋事
have a friend to 固定短语
麻袁立亭： I have a friend也是对的 这两句话所表达的意思上有细微的差别I have one friend是我有一个朋友,但强调的是数量 I have a friend也是我有一个朋友,但强调的是这样一个事实,并不在乎数量.a是冠词 可以用来修饰名词
汕尾市13079066068： I don't have friends和I don't have any friends谁是对的? - ？
麻袁立亭： 两句话都是正确的 只是第二句翻译起来比较顺畅 第二句比第一句更富有感情色彩 any 在这里修饰了friends 第一句 我没有朋友 第二句 我没有任何朋友 第一句如果想更完美 可以说I don't have a friend 英语很简单的 加油
汕尾市13079066068： 英语I.Have a friend改一般疑问句和否定句的格式 - ？
麻袁立亭：[答案] Do you have a friend? I don`t have a friend. 你可以把里面的人称改一下~
汕尾市13079066068： 英语I. Have a friend改一般疑问句和否定句的格式 - ？
麻袁立亭： Do you have a friend?I don`t have a friend.你可以把里面的人称改一下~
汕尾市13079066068： i has a friend这句话有错误吗? - ？
麻袁立亭： has改为have 为你解答,如有帮助请采纳,如对本题有疑问可追问,Good luck!
汕尾市13079066068： 帮我写一篇英语作文 i have a new friend - ？
麻袁立亭： I have a new friend,his(her)name is 某某某(名字).He is 某某(年龄) years old.He is 某某(性格特征).He likes 某某(爱好,能写很多).And his family has 3 members.His father is 某某(职业),he goes to work by 某某(交通工具).His ...
汕尾市13079066068： 急求英语80字以上的作文翻译?(My friends) - ？
麻袁立亭： I have a friend whose name is Star. She is not very high and well-nourished. In my eyes she is really cute. Since primary school we know each other, our friendship lasts for years. We live in the same plot, hers is just behind mine, I can even see her ...
汕尾市13079066068： I have a 什么什么 friends和I have lots of friends.是同义句？
麻袁立亭： I have a _____ ____ friends. I have lots of friends.同义句 答案:lot of 解析:a lot of = lots of 大量;许多
汕尾市13079066068： 首字母填空 I have a friend,and she u - -- - to smoke cigarettes.She began smoking at the age of 13 - ？
麻袁立亭： used cool moved first这个必须的.祝楼主学习进步,身体健康.
汕尾市13079066068： i have a english friend 是什么意思 - ？
麻袁立亭： i have a english friend 我有一个英国朋友 双语例句1 I have a friend who also speaks in English and Geman when he is drunk.我都有朋友饮醉咗会讲英文架*哈哈.2 I have two weekly tutorials with a friend of mine who is also an English teacher.我每周有两次课程,由我的一个朋友来教授,他同时也是英文老师.
