about与on的用法区别

about与on的用法区别

两者都可表示“关于”，区别是：about 指泛泛地或非正式地谈论某事，其谈论的内容也较为普通；而on 则指比较有系统地或理论性较强地论述某事，其论述的内容较正式或较严肃。比较：

He wrote on mathematics. 他撰写数学著作。

He wrote about the school. 他报道有关这所学校的情况。

It is a book on birds. 那是一本论及鸟类的书。(可能是一本学术著作)

It is a book about birds. 那是一本关于鸟类的书。(可能是一本供小孩看的故事书)

of与for的用法以及区别

of与for的用法以及区别 for 表原因、目的 of 表从属关系 介词of的用法 （1）所有关系 this is a picture of a classroom （2）部分关系 a piece of paper a cup of tea a glass of water a bottle of milk what kind of football，American of soccer？ （3）描写关系 a man of thirty 三十岁的人 a man of shanghai 上海人 （4）承受动作 the exploitation of man by man．人对人的剥削。 （5）同位关系 It was a cold spring morning in the city of London in England． （6）关于，对于 What do you think of Chinese food？ 你觉得中国食品怎么样？ 介词 for 的用法小结 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 helping me with my English. 谢谢你帮我学习英语。 Thank you for your last letter. 谢谢你上次的来信。 Thank you for teaching us so well. 感谢你如此尽心地教我们。 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。 Watching TV too much is bad for your health. 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 morning. 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 yuan for the dictionary. 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. 这儿有你的一封信。 7. 表示“支持、赞成”。如: Are you for this plan or against it? 你是支持还是反对这个计划? 8. 用于一些固定搭配中。如: Who are you waiting for? 你在等谁? For example, Mr Green is a kind teacher. 比如,格林先生是一位心地善良的老师。

(完整版)英语四级阅读理解练习题及解析(2)

英语四级阅读理解练习题及解析(1) 【阅读练习】 What is it about Americans and food? We love to eat ,but we feel 1 about it afterward. We say we want o nly the best, but we strangely enjoy junkfood. We’re 2 with health and weight loss but face an unprec edented epidemic of obesity(肥 胖). Perhaps the 3 to this ambivalence(矛盾情 结) lies in our history. The first Europeans cameto this continent searching for new spices but went i n vain. The first cash crop(经济作 物)wasn’t eaten but smoked. Then there was Prohibi tion, intended to prohibit drinking butactually enc ouraging more 4 ways of doing it. The immigrant experience, too, has been one of inha rmony. Do as Romans do meanseating what “real Amer icans” eat, but our nation’s food has come to be 5 by imports—pizza,say, or hot dogs. And some of t

常用介词用法(for to with 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 helping me with my English. 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。 Watching TV too much is bad for your health. 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 morning. 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 yuan for the dictionary. 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. 这儿有你的一封信。 7. 表示“支持、赞成”。如: Are you for this plan or against it? 你是支持还是反对这个计划? 8. 用于一些固定搭配中。如: Who are you waiting for? 你在等谁? For example, Mr Green is a kind teacher. 比如,格林先生是一位心地善良的老师。 尽管for 的用法较多，但记住常用的几个就可以了。 to的用法: 一：表示相对，针对 be strange (common, new, familiar, peculiar) to 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 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.

郑大远程《大学英语II》第01-10章 在线测试(全部正确)

《大学英语II》第01章在线测试 A B C D More and more young people enjoy to pop music. A B C D We were all ＿＿＿＿＿＿＿ by the speech given by the blind girl yesterday A B C D How about ＿＿＿＿＿＿ A B C D If you keep ＿＿＿＿＿＿, you will succeed sooner or later. A B C D

《大学英语II》第02章在线测试 《大学英语II》第02章在线测试剩余时间：59:42 答题须知：1、本卷满分20分。 2、答完题后，请一定要单击下面的“交卷”按钮交卷，否则无法记录本试卷的成绩。 3、在交卷之前，不要刷新本网页，否则你的答题结果将会被清空。 第一题、单项选择题（每题1分，5道题共5分） 1、Marlin is an independent man who is not about ＿＿＿＿＿ on his parents any more. A、relying B、having relied C、to rely D、to have relied 2、By the time she is 50 years old, she ＿＿＿＿＿ an inmate of the prison for over half of her life. A、will have been B、will be C、would have been D、would be 3、There was a knock at the door. It was the second time someone ＿＿＿＿＿ me that evening. A、to have interrupted B、would have interrupted C、to interrupt D、had interrupted 4、He has been writing the essay the whole morning and he still ＿＿＿ . A、has B、is C、has been D、does 5、Our modern civilization must not be thought of as ＿＿＿＿＿＿ in a short period of time. A、being creaｔed B、having creaｔed C、creating D、having been creaｔed 《大学英语II》第03章在线测试 1.A 2.B 3.B 4.C 5.C

of和for的用法

of 1....的,属于 One of the legs of the table is broken. 桌子的一条腿坏了。 Mr.Brown is a friend of mine. 布朗先生是我的朋友。 2.用...做成的;由...制成 The house is of stone. 这房子是石建的。 3.含有...的;装有...的 4....之中的;...的成员 Of all the students in this class,Tom is the best. 在这个班级中,汤姆是最优秀的。 5.(表示同位) He came to New York at the age of ten. 他在十岁时来到纽约。 6.(表示宾格关系) He gave a lecture on the use of solar energy. 他就太阳能的利用作了一场讲演。 7.(表示主格关系) We waited for the arrival of the next bus. 我们等待下一班汽车的到来。

I have the complete works of Shakespeare. 我有莎士比亚全集。 8.来自...的;出自 He was a graduate of the University of Hawaii. 他是夏威夷大学的毕业生。 9.因为 Her son died of hepatitis. 她儿子因患肝炎而死。 10.在...方面 My aunt is hard of hearing. 我姑妈耳朵有点聋。 11.【美】(时间)在...之前 12.(表示具有某种性质) It is a matter of importance. 这是一件重要的事。 For 1.为,为了 They fought for national independence. 他们为民族独立而战。 This letter is for you. 这是你的信。

介词about的用法

介词about的用法 1.表示“关于” This movie is about Lei Feng 这部电影是关于雷锋的。 Something about your country 一些关于你们国家的事. 2.表示“大约” At about 6:00 大约在六点钟 About 100 meters 大约100米 3.与how/what连用，表示征求别人意见 How/what about + n/doing ？去...怎么样？/来个....怎么样？ How/what about + sb ？某人呢？ What about going for a walk? 去散步怎么样？ How about a cup of coffee? 来呗咖啡怎么样？ I like action movie.What about you? 我喜欢动作片。你呢？ 4.be about to do sth 正要做某事，就要做某事 The train is about to leave. 火车就要开了。 When he came to my home,I was about to go out. 他来我家时，我正准备出去。 5.带有about的动词短语 talk about sth 谈论某事 think about sth 考虑，想到 dream about sth 梦想某物/ 梦到某物 complain about sth 抱怨某物 worry about sb/sth 担心某人/某物 tell sb about sth 告诉某人某事 argue about sth 为某事吵架 hear about 听说 6.带有about的形容词短语 be angry about sth 因为某事生气 be careful about sth/sb 小心某物/某人 be worried about sb/sth 担心某人/某物 be curious about sth 对....很好奇 be excited about sth 对....感到激动 be happy/glad about sth 对...感到高兴 be sad about sth 对...感到难过 be sure/certain about sth 确信.../对...很确定/对...有把握 be serious about sth对...是认真的 be nervous about sth对...很紧张，不安 be upset about sth对...很不安

新视野大学英语三口语试题.pdf

1 How do you feel about trying new things? I like trying new things because it enables me to experience more and learn more about others, by which I can become more liberal and less biased. they often let me down. Trying new things I don’t like trying new things because sometimes means venture or even danger, so I don’t like trying new things and would like to stick to the familiar 2 What stops you from trying new things? Trying new things may have too much demand on me. Furthermore, trying new things may bring me disappointment or even failure. 3 What have you achieved in your life that makes you feel proud? I take great pride in winning first place in the speech contest held in my university. 4 Who do you admire for their achievements and why? I admire Winston Churchill, who led his country from the verge of defeat to victory. 1Do you believe that a good memory is critical to success? Why or why not? Yes, I firmly believe that a good memory determines a person’s success. Firstly, a good memory is a great help in the process of learning. Secondly, a good memory can help you build relationships, which is also a decisive factor for success. Thirdly and most importantly, a good memory can provide you with quick, reliable access to essential thinking tools. No, I don’t think a good memory is critical to success.In my opinion, it is diligence, creativity and persistence that eventually determine one’s success. 2 Have you ever tried any method to improve your memory? Do you think that useful? Yes, I have tried some methods to improve my memory. For example, I learned the method of location from a book and I liked it very much. Yes, I once believed that there might be some special shortcuts to improving my memory. But when I tried a couple of methods, I felt it was inconvenient to apply them and it is a waste of time. I think I would never try any method again

for和of的用法

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 helping me with my English. 谢谢你帮我学习英语。 Thank you for your last letter. 谢谢你上次的来信。 Thank you for teaching us so well. 感谢你如此尽心地教我们。 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。 Watching TV too much is bad for your health. 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 morning. 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 yuan for the dictionary. 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. 这儿有你的一封信。 7. 表示“支持、赞成”。如: Are you for this plan or against it? 你是支持还是反对这个计划? 8. 用于一些固定搭配中。如:

How_come_的用法

How come ? 请看下面一道高考题: --Susan, will you please go and empty that drawer? --________? A. What for B. What is it C. How is it D. How come 答案:A 本题检测考生在实际情景中运用英语进行交际的能力。A、B、C三个选项考生比较熟悉,但是对How come这种说法并不熟悉,下面对How come在交际用语中以及其它一些用法进行归纳: I. How come...? How come是固定搭配,意为:怎么会......?怎么回事......?怎么搞的......?它和Why一样,可以用来引导一个问句。所不同的是,如果用How come来提问,就表示你觉得某件事很奇怪,有点想不通;并且,以How come开头的问句使用的仍是陈述句的语序。如:

How come you didn't tell me earlier ? (=Why didn't you tell me earlier ?) 你怎么不早点儿告诉我? How come you didn't invite him to the party! He is your future boss. 你怎么没有邀请他参加晚会!他是你未来的老板。 另外,以How come开头的问句有时也可说成:How comes it (about) that... ? / How is it that... ? 如: How comes it that you're so late? (=How is it that you're so late?) 你为什么来得这么迟? II. What for? What for... ? 是询问什么原因或目的,相当于:Why...? / For what purpose...? 如: What do you need to borrow money for? I thought you had plenty of money. 你为什么需要借钱? 我本以为你有许多钱。 -Let's go and have a good drink tonight. -________ Have you got the first prize in

常用介词用法(for-to-with-of)

常用介词用法(for-to-with-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 helping me with my English. 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。Watching TV too much is bad for your health. 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 morning. 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 yuan for the dictionary. 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. 这儿有你的一封信。 7. 表示“支持、赞成”。如: Are you for this plan or against it? 你是支持还是反对这个计划? 8. 用于一些固定搭配中。如: Who are you waiting for? 你在等谁? For example, Mr Green is a kind teacher. 比如,格林先生是一位心地善良的老师。

英语形容词和of for 的用法

加入收藏夹 主题： 介词试题It’s + 形容词 + of sb. to do sth.和It’s + 形容词 + for sb. to do sth.的用法区别。 内容： It's very nice___pictures for me. A.of you to draw B.for you to draw C.for you drawing C.of you drawing 提交人：杨天若时间：1/23/2008 20:5:54 主题：for 与of 的辨别 内容：It's very nice___pictures for me. A.of you to draw B.for you to draw C.for you drawing C.of you drawing 答：选A 解析：该题考查的句型It’s + 形容词+ of sb. to do sth.和It’s +形容词+ for sb. to do sth.的用法区别。 “It’s + 形容词+ to do sth.”中常用of或for引出不定式的行为者，究竟用of sb.还是用for sb.，取决于前面的形容词。 1) 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. 例： 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。 2) 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。例： 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 u s to finish the work. 对我们来说，完成这项工作很困难。 for 与of 的辨别方法： 用介词后面的代词作主语，用介词前边的形容词作表语，造个句子。如果道理上通顺用of，不通则用for. 如： You are nice.(通顺，所以应用of)。 He is hard.(人是困难的，不通，因此应用for.) 由此可知，该题的正确答案应该为A项。 提交人：f7_liyf 时间：1/24/2008 11:18:42

whatabout和howabout的用法

What about和How about的用法 What about … 和how about … 是英语口语中常用的两个省略句型，它们的意思和用法基本相同，常常用在以下场合。例如：一、向对方提出建议或请求。例如： 1．How about going out for a walk 出去散散步好吗 2．What about another cake 再吃块蛋糕好吗 二、征询对方的看法或意见。例如： 1、What about the playing the violin （你认为）她的小提琴拉的怎么样 2、What about the TV play 那个电视剧怎么样 三、询问天气或身体等情况。例如： 1、What about the weather in your home town 你们家乡的气候如何 2、How about your uncle now You can’t leave him by himself. 你叔叔近来身体好吗你们不能单独让他生活。 四、寒暄时用作承接上下文的转折语。例如： I am from Beijing. What about you 我是北京人，你呢 五、对所陈述的情况做出反诘，常给予对方一种暗示。例如： ——My memory is good. I’ve never forgotten anything.我的记忆力很好，从不忘记什么。——What about that time you left your key to the office at home那次你将办公室的要是忘在家里算是怎么回事呀 Agree的用法（） agree是一个使用范围很广的单词，意为“同意；赞同”。它有很多相关词组，现在把其主要用法归纳如下： 1. agree (to sth) 意为“同意；愿意；答应（某事物）”。如：Is he going to agree to our suggestion 他会同意我们的建议吗 2. agree with sb 意为“适合（某人的健康或胃口）”，尤用于否定句或疑问句中。如：The climate there doesn\'t agree with him. 那里的气候对他不合适。 3. agree (with sb) (about / on sth) 意为“同意；（与某人）意见一致”。如：We couldn\'t agree on a date/ when to meet. 关于日期（什么时候见面），我们没有能取得一致意见。 4. agree sth意为“在某事物上取得一致意见；商定”。如：Can we agree a price 我们能不能商定一个价格 5. agree (with sth) 意为“与（某事物）相一致；相符合；相吻合”。如：Your thoughts didn\'t agree with mine. 你的想法和我的想法不一致。 6. be agreed（on /about sth）意为“达成协议；意见一致”。如：We are all agreed on the best action. 我们都同意这一最佳措施。 7. agree后面还可以接宾语从句，即be agreed that ...如：It was agreed that another

How用法详细讲解

How 用法详解 how的用法较活，含义丰富。现就how在句中的用法作一小结，以便同学们在学习中能更好地理解和掌握它。 1. 表示感叹。如： How cold it is today！ 今天好冷啊！ How hard they are working！ 他们在多么辛勤地劳动啊！ How fast he runs！ 他跑得多快啊！ 2. 表示问候。如： How do you do？你好！ How are you？你（身体）好吗？ 3. 表示某种方式、手段或方法。如： How do you spell it？

你怎样拼写它？ How did he go to school yesterday？ 他昨天是怎样去上学的？ How do you know about it？ 你怎么知道这件事的？ 4. 表示爱好、程度、看法等。如： How do you like the music？ 你觉得这首乐曲如何？ How is your Chinese？ 你的汉语如何？ How do you like China？ 你认为中国怎么样？ 5. 问天气。如： How is the weather in Beijing？ 的天气怎么样？

How is the weather in winter？ 冬天的气候怎样？ 6. 问路。如： Excuse me， how can I get to the train station？ 请问去火车站的路怎么走？ 7. 问年龄。如： How old are you？你多大了？ 8. 问数量。如： How many players are there in a team？ 一个队有几名队员？ How much bread is there on the table？ 桌子上有多少面包？ 9. 问价钱。如：

keep的用法及of 、for sb.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。 Traffic in Britain keeps to the left.(介词短语)英国的交通是靠左边行驶的。 注意：一般情况下，keep后接形容词较为多见。再如： She knew she must keep calm.她知道她必须保持镇静。 Please keep silent in class.课堂上请保持安静。 3. ①keep doing sth. 意为"继续干某事"，表示不间断地持续干某事，keep后不 能接不定式或表示静止状态的v-ing形式，而必须接延续性的动词。 例：He kept working all day, because he wanted to finish the work on time. 他整天都在不停地工作，因为他想准时完成工作。 Keep passing the ball to each other, and you'll be OK.坚持互相传球，你们就

大学英语模拟试题

郑州大学远程教育学院入学测试机考 专升本大学英语模拟题 1、One of my teeth is so ______ that it is going to be missing soon.（） A．lose B．loose C．loss D．lost 标准答案：B 2、—How about taking a walk? —Oh, I think it’s ______ cold for a walk. （） A．very much B．too much C．much too D．so much 标准答案：C 3、You are supposed to write your composition every ______ line.（） A．one B．a C．other D．another 标准答案：C 4、After living for years in a big city, they found it difficult to settle ______ in a town.（） A．for B．at C．up D．down 标准答案：D 5、The reason for my absence was ______ I had fallen ill.（） A．why B．because C．for D．that 标准答案：D 6、Only with your help, such difficulties in the field. A. can we overcome B. we can overcome C. should we overcome D. We should overcome

how 与what的用法

在英语中，how是个疑问副词，what是个疑问代词。在它们引起的句式中，有时可以互相换用，来表达相同或相似的意思。一、问天气：How…？=What…like? 如： How was the weather yesterday? 昨天的天气怎么样？ What was the weather like yesterday? 二、征求意见或建议：How about…?=What about…？如：How about going skating? What about going skating?去滑冰怎么样？ 三、问年龄：How old…?=What…the age…？你多大岁数了？ 四、问看法：How…like…?=What…think of/about…? 如：How do you like this film? 你认为这部影片怎么样? What do you think of this film? 五、问价钱：How much…？=What…the price 价钱）of…？如：How much is the book? What’s the price of the book? 这书多少钱？ 六、“how／what+可数名词单数”构成感叹句：How + adj. + a/ an+ n…!=What + a/an +adj. +n. …! 如： How clever a girl she is! 她是个多么聪明的女孩子啊！ What a clever girl she is! 七、“how/what+可数名词复数或不可数名词”构成感叹句，句子结构有所不同，汉语意思也稍有差异。如：

for和of引导的不定式结构的区别

for和of引导的不定式结构的区别 不定式是一种非谓语动词，不能单独作谓语，因此没有语法上的主语。但由于不定式表示的是动作，在意义上可以有它的主体。我们称之为逻辑主语。 提起不定式逻辑主语，人们首先想到的会是“for+名词（宾格代词）+不定式”的复合结构。如：It is important for us to study English well．然而，有时不定式的逻辑主语须要用“of+名词（代词宾格）”才行。例如：It is kind of you to help me．而不能说：It is kind for you to help me．在选择介词“for”还是“of”时，人们往往总是凭感觉而定。有时受习惯影响，多选介词“for”。于是常出现这样的错误：It was careless for him to lose his way．It is cruel for you to do so．由于众多语法书对这种结构中使用“for”与“of”的区别介绍甚少，一些人对其概念认识尚不完全清楚，笔者认为有必要就这一问题作些探讨与介绍。 一、在句中的语法作用不同 a．不定式for结构在句中可以作主、宾、表、定、状、同位语： 1．It is easy for Tom to do this work．（主语）汤姆做此工作是容易的。 2．I'd like for him to come here．（宾语）我喜欢他来这里。 3．His idea is for us to travel in two different groups．（表语）他的想法是：我们分成两组旅行。 4．Have you heard about the plan for you to go abroad．（定语）你听到让你出国的计划吗？ 5．The word is too difficult for him to pronounce well．（状语）这单词太难，他念不准。 6．In the most schools，it is the custom for the headmaster to declare the newterm start．在大部分学校，校长宣布新学期开始是一个习惯。 b．不定式of结构只能在句中作主语。 1．It was careless of him to leave his umbrella in the train．他把伞丢在火车上真是太粗心了。 2．It is awfully good of you to come to see me off at the station．谢谢你来车站送我。 二、逻辑主语的名词有所不同