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volunteer用法详解

volunteer用法详解
volunteer用法详解

volunteer

【点拨】volunteer既可以作名词,表示“志愿者”;也可以作动词,表示“自愿做;无偿做”等含义。

【看例句知用法】

[Part 1]

They are retired and working in the organisation as volunteers.

他们已经退休了,在那个组织里做志愿者。

As a volunteer with the Little Village Environmental Protection Organisation, she went door to door talking about the dangers of pollution.

作为“小村庄环境保护组织”的志愿者,她挨家挨户地给人们讲污染的危险性。

He worked as a volunteer teacher in this school to help the poor children.

他在这所学校任志愿教师,以帮助这些穷困的孩子。

[小结] 此部分列举的例句体现的是volunteer作名词时的用法:

volunteer是可数名词。表示是某个组织的志愿者时,通常使用“a volunteer _________ +组织名称”结构。volunteer可以与一些名词连用,又如volunteer firefighters, volunteer guides 等等。

Key: with

[Part 2]

He was always the first to volunteer for such tasks.

他总是第一个自愿做这样的任务。

She worked in a restaurant and also volunteered for teaching dance classes at night.

她在一家餐厅工作,也在晚上自愿教授舞蹈课程。

Over thirty thousand people have volunteered to help out.

超过三万人自愿进行了帮助。

My brother volunteered to play the guitar and sing a song at the school party.

我弟弟自愿在学校晚会上弹吉他、唱歌。

[小结] 此部分列举的例句体现的是volunteer作动词时的用法:

volunteer的常用搭配有:

volunteer _______ sth / doing sth 表示“志愿/自动申请某事;志愿/自动申请做某事”。volunteer to do sth 表示“自愿/义务/无偿做某事”。

Key: for

【拓展】voluntary是其形容词形式。

【即学即练】补全句子,每空一词。

他年轻的时候,自愿在最贫穷的地方工作。

1) He _______ _______ ________ in the poorest area when he was young.

2) He _______ _______ ________ in the poorest area when he was young.

独立主格结构

独立主格结构 概念:由名词或代词加上分词等构成的一种独立结构,名词或代词与其后的分词等构成逻辑上的主谓关系,与主句不发生句法上的联系。 构成:逻辑主语+逻辑谓语 特点:1. 用逗号与主句分开; 2. 逻辑主语与主句主语不同,单独存在。 位置:句前、句末或句中,位置相当灵活。 注意:独立主格结构与句子之间不能使用任何连接词 句法功能: 1.作时间状语All the officials having arrived, the meeting was declared open. = After/ when all the officials had arrived, the meeting was declared open. 2.作条件状语All the work done, you can have a rest. = All the work is done, and you can have a rest. 3.作原因状语The boy leading, we had no trouble finding the strange cave 4.作伴随状语或补充说明I took my ticket, and marched proudly up the platform, with my cheeses, the people filling back respectfully on either side. (Three Men in a Boat by Jerome K. Jerome) 5.作定语,其功能相对于一个定语从句Close to the bank I saw deep pools, the water blue like the sky. 基本结构: 1. 名词(代词)+现在分词 e.g.: There being no bus, we had to walk home. (由于没有公共汽车,我们只好走路回家。) 2. 名词(代词)+过去分词 e.g.: City born and city bred, I have always regards the country as something you look at through a train window, or something you occasional visit during the week. 3. 名词(代词)+不定式 e.g.: Many trees, flowers, and glass to be planted, out newly-built school will look even more beautiful. (种上许多的树、花和草后,我们新建的学校看上去将更美。) 4. 名词(代词)+形容词 e.g.: The Trojans asleep, the Greek soldiers crept out of the hollow wooden horse. (特洛伊人睡着了,于是希腊士兵从中空的木马里面悄悄爬了出来。) 5. 名词(代词)+副词 e.g.: The lights off, we could not go on with the work. (灯熄了,我们不能继续工作了。) 6. 名词(代词)+名词 e.g.: His first shot failure, he fired again. (他第一枪没击中,又打了一枪。)

英语语法专项:动名词用法讲解及练习(附答案)

你听过英文语法有动词(verb)、名词(noun);但你听过有动名词(gerund)吗? 1. The girl is singing a song. 2. The girl singing now is my sister. 3. Singing is one of her hobbies(爱好). 三个句子中都有singing。第一个句子的singing是常见的现在进行式(Present Continuous),是说眼下正在做什么;第二个句子的singing是现在分词(Present Participle),它把sing这个动词转为形容词,但仍有动词的成份(哈哈,这么一说,要把你搞晕了吧:-) 。关于分词,以后有空再谈OK?)。好戏在后头,你看看第三个句子的singing到底是什么东东呀?原来就是我们的主角动名词(Gerund)了!憧矗瑂ing原本是个动词,可是现在它加上ing后,看来竟像是一个名词了。 一、名词性的动名词(Nominal Gerund) Nominal Gerund 可以加上定冠词(Definite article,如the)或不定冠词(Indefinite article,如a, an),其他可加在动名词前的还有如:my, this, some, any, all, no 等等。举例如下: 1. The mellow(愉快地) singing of the birds announces the coming of spring. (singing前加定冠词the及形容词mellow;coming 前加the) 2. We knew the robber was near when we heard a faint rustling(沙沙声) in the bushes. (rustling 前加不定冠词a及形容词faint) 从上面的例子可看出如何将一个动词转成名词;但它和真正的名词还是有区别的,那就是没有单数或复数之分。不过,有一些动名词是可以变成真正名词的喔,如:saying, writing, opening, painting, cutting, heading, feeling, being,saving, surrounding, crossing, misunderstanding 等等。它们都可以有复数的喔,方法就是在它们的后面加个s,如:paintings。 二、动词性的动名词(Verbal Gerund) 看看下面的句子: Carelessly writing essays annoys the teacher. 上面的句子里的writing是动名词,但前面有副词carelessly(粗心地),后面又有受词(Object) essays。因此writing就有动词的特征。 注意:Verbal Gerund 这类动名词的前面可不能加上任何冠词(the, a, an ...)喔。 动名词的功能与用法 一、在句子中用作主语(Subject)或主语的补语(Subject Complement): 1.1 作主语 1. Listening to music gives me pleasure. (主语Listening ) 2. Running is good exercise. (主语running) 3. Walking to school is a good idea. (主语walking) 1.2 作主语的补语 1. My cat's favorite activity is sleeping. (补语sleeping) 2. Seeing is believing. (主语seeing, 补语believing) 1.3 主语置于句尾 1.3.1 用It + be + ... +v-ing 句型 1. It is fun speaking English. 2. It is of great importance fighting against pollution(污染).

PIC系列单片机的中断资源特点及其应用方法详解

PIC系列单片机的中断资源特点及其应用方法详解 1 PIC单片机简介PIC系列单片机是美国Microchip技术公司推出的高性能价格比的8位嵌入式控制器(Embedded Controller),它采用了精简指令集计算机RISC (Reduced Instruction Set Computer)和哈佛(Harvard)双总线以及两级指令流水线结构。具有高速度、低工作电压、低功耗等特点和优良的性能价格比,因而PIC系列单片机越来越受到单片机开发与应用工程技术人员的青睐。该系列独特的结构和中断资源使其在使用时与其它系列的单片机有许多不同之处。下面以PIC16CXX系列微控制器为例来介绍PIC 系列单片机的中断资源特点以及应用方法。 2 中断资源的开发与屏蔽图1是PIC16C64/64A/65/65A的中断逻辑电路图,其它型号芯睡的中断资源也大致相同,只是资源多少不一而已,但它们的中断入口只有一个(入口地址在004H)。PIC 单片机的中断大致可以分为两类。 第一类是由中断控制器INTCON直接控制的中断,包括外部引脚中断INT的RB口电平变化中断以及定时器TMRO溢出中断,它们的中断允许位和中断标志都在INTCON寄存器中。引脚中断INT和定时器TMRO溢出中断与其它微处理器相同。RB口电平变化中断是PIC 单片机特有的中断,当把RB口高4位I/O口线设置为输入时,只要这4位I/O 口线上的电平发生变化就会引起中断。RB口的电平中断特性对用户是非常有用的。用户可以直接利用这些口线的关键部位进行电平检测,并可利用中断进行保护性控制等操作;另一方面,电平中断特性还可以利用RB口的软件控制弱上拉特性组成一个矩阵键盘,并用按键唤醒CPU,这对于那些以电池供电的系统特别有用。 另一类是外围接口中断,包括定时器TMR1溢出中断、TMR溢出或匹配中断、同步串行口中断、异步串行口中断、并行从动口中断和CCP(Capture/Compare/PWM)中断等,而带A/D功能的PIC16C7X系列微处理器还有A/D转换完成中断。这些中断的允许位分别在PIE1和PIE2寄存器,而中断标志则分别在PIR1和PIR2中。 所有的中断都有自己的中断允许位和中断标志,外围接口中断不仅受各自的中断允许位控制,同时还共同受外围中断控制允许位的控制。全局中断允许位GID能够控制所有的中

独立主格with用法小全

独立主格篇 独立主格,首先它是一个“格”,而不是一个“句子”。在英语中任何一个句子都要有主谓结构,而在这个结构中,没有真正的主语和谓语动词,但又在逻辑上构成主谓或主表关系。独立主格结构主要用于描绘性文字中,其作用相当于一个状语从句,常用来表示时间、原因、条件、行为方式或伴随情况等。除名词/代词+名词、形容词、副词、非谓语动词及介词短语外,另有with或without短语可做独立主格,其中with可省略而without不可以。*注:独立主格结构一般放在句首,表示原因时还可放在句末;表伴随状况或补充说明时,相当于一个并列句,通常放于句末。 一、独立主格结构: 1. 名词/代词+形容词 He sat in the front row, his mouth half open. Close to the bank I saw deep pools, the water blue like the sky. 靠近岸时,我看见几汪深池塘,池水碧似蓝天。 2. 名词/代词+现在分词 Winter coming, it gets colder and colder. The rain having stopped, he went out for a walk.

The question having been settled, we wound up the meeting. 也可以The question settled, we wound up the meeting. 但含义稍有差异。前者强调了动作的先后。 We redoubled our efforts, each man working like two. 我们加倍努力,一个人干两个人的活。 3. 名词/代词+过去分词 The job finished, we went home. More time given, we should have done the job much better. *当表人体部位的词做逻辑主语时,不及物动词用现在分词,及物动词用过去分词。 He lay there, his teeth set, his hands clenched, his eyes looking straight up. 他躺在那儿,牙关紧闭,双拳紧握,两眼直视上方。 4. 名词/代词+不定式 We shall assemble at ten forty-five, the procession to start moving at precisely eleven. We divided the work, he to clean the windows and I to sweep the floor.

独立主格结构的用法

独立主格结构的用法 独立主格结构是一个名词或代词(作为逻辑主语),加上一个形容词、副词、介词短语、分词、不定式、名词等构成,在句中常作状语。 一、独立主格结构的特点 1、独立主格结构的逻辑主语与句子主语不同,它独立存在。 2、名词或代词与后面的形容词、副词、介词短语、分词、不定式等存在逻辑上的主谓关系。 3、独立主格结构一般是用逗号与主句分开,但与主句之间不能使用任何连接词。 二、独立主格结构的构成 1、名词或代词 + 现在分词 The children playing in the room, I couldn’t get down studying. 孩子们在屋里玩,我没法学习。 Mother being ill, I had to stay at home looking after her. 母亲病了,我只好待在家里照顾她。 There being no bus, we had to walk home. 由于没有公共汽车,我们只好走回家。 2、名词或代词 + 过去分词 Five years later, he returned home, his character greatly changed. 五年后他返回家乡,性格大变了。 They walked along holding hands, their fingers interlocked. 他们手指交错,携手而行。 The job finished, we went home. 工作结束后我们就回家了。 Everything considered, his plan seems better. 从各方面考虑,他的计划似乎好一些。 That done, he put on his sweater and went out. 做完这事他穿上毛衣出去了。 The question settled, they went back to their respective posts. 问题解决了,他们就各自回到了他们的工作岗位。 This done, we went home. 做完这事,我们就回家了。 3、名词或代词 + 不定式 在“名词/代词 + 动词不定式”这类独立主格结构中,动词不定式和它前面的名词或代词如果存在着逻辑上的主谓关系,动词不定式则用主动的形式;如果是动宾关系,则用被动形式,如: We divided the work, he to dean the window and I to sweep the floor. 我们分了工,他擦窗户,我扫地。 He is leaving for the conference next week, all expenses to be paid by his company. 下个星期他会去参加会议,所有费用归公司出。 Many trees, flowers, and grass to be planted, our newly-built school will look even more beautiful. 学校种上了许多树、花和草,我们新建的学校看起来越来越漂亮了。 4、名词或代词 + 形容词 He entered the room, his face pale. 他走进屋来脸色苍白。

商务写作指南:超好记的appreciate的用法

WRONG: We would appreciate if you corrected the entry in the register as soon as possible. 错误用法:如果你能尽快更改登记处的入口,我将非常感激。 RIGHT: We would appreciate it if you corrected the entry in the register as soon as possible. 正确用法:如果你能尽快更改登记处的入口,我将非常感激(英语原句比前者多了一个it)。This is a very common mistake, and remember that when you use the phrase “I would appreciat e…”you MUST include the word “it”before “if”: 这是一个常见错误,记住当你要用“I would appreciate…”这个表达式时,一定要在if前加一个it。 More examples: 更多例子: E.g.1:I am sure the supervisory authority would not appreciate it if you took that course of action. 例1:我相信监督部门对你的所作所为不会表示欣赏。 E.g.2:We would appreciate it if you would arrange for immediate payment. 例2:如果您能立即付款,我们将很感激。 There is no need to add “it”if you do not include “if”. 如果你不用if从句的话,就没有必要在appreciate后面加it了。 E.g.: We would much appreciate a letter informing us of the result of your enquiries. 例句:如果您能对您的询盘结果给我们回信的话,我们将非常感激。 An alternative phrase to “I would appreciate it if…”is, “I would be grateful if…”This is the more formal phrase of the two and does not require that troublesome“it”! “I would appreciate it if…”这个表达式的替代用法有“I would be grateful if…”,但是这个用法更为正式,而且不需要加那个麻烦的“it”!

5种基本句型和独立主格结构讲解

英语中的五种基本句型结构 一、句型1:Subject (主语) +Verb (谓语) 这种句型中的动词大多是不及物动词,所谓不及物动词,就是这种动词后不可以直接接宾语。常见的动词如:work, sing, swim, fish, jump, arrive, come, die, disappear, cry, happen等。如: 1) Li Ming works very hard.李明学习很努力。 2) The accident happened yesterday afternoon.事故是昨天下午发生的。 3)Spring is coming. 4) We have lived in the city for ten years. 二、句型2:Subject (主语) +Link. V(系动词) +Predicate(表语) 这种句型主要用来表示主语的特点、身份等。其系动词一般可分为下列两类: (1)表示状态。这样的词有:be, look, seem, smell, taste, sound, keep等。如: 1) This kind of food tastes delicious.这种食物吃起来很可口。 2) He looked worried just now.刚才他看上去有些焦急。 (2)表示变化。这类系动词有:become, turn, get, grow, go等。如: 1) Spring comes. It is getting warmer and warmer.春天到了,天气变得越来越暖和。 2) The tree has grown much taller than before.这棵树比以前长得高多了。 三、句型3:Subject(主语) +V erb (谓语) +Object (宾语) 这种句型中的动词一般为及物动词, 所谓及物动词,就是这种动词后可以直接接宾语,其宾语通常由名词、代词、动词不定式、动名词或从句等来充当。例: 1) He took his bag and left.(名词)他拿着书包离开了。 2) Li Lei always helps me when I have difficulties. (代词)当我遇到困难时,李雷总能给我帮助。 3) She plans to travel in the coming May Day.(不定式)她打算在即将到来的“五一”外出旅游。 4) I don’t know what I should do next. (从句)我不知道下一步该干什么。 注意:英语中的许多动词既是及物动词,又是不及物动词。 四、句型4:Subject(主语)+Verb(谓语)+Indirect object(间接宾语)+Direct object (直接宾语) 这种句型中,直接宾语为主要宾语,表示动作是对谁做的或为谁做的,在句中不可或缺,常常由表示“物”的名词来充当;间接宾语也被称之为第二宾语,去掉之后,对整个句子的影响不大,多由指“人”的名词或代词承担。引导这类双宾语的常见动词有:buy, pass, lend, give, tell, teach, show, bring, send等。如: 1) Her father bought her a dictionary as a birthday present.她爸爸给她买了一本词典作为生日礼物。 2)The old man always tells the children stories about the heroes in the Long March. 老人经常给孩子们讲述长征途中那些英雄的故事。上述句子还可以表达为: 1)Her father bought a dictionary for her as a birthday present. 2)The old man always tells stories about the heroes to the children in the Long March. 五、句型5:Subject(主语)+Verb (动词)+Object (宾语)+Complement(补语) 这种句型中的“宾语+补语”统称为“复合宾语”。宾语补足语的主要作用或者是补充、说明宾语的特点、身份等;或者表示让宾语去完成的动作等。担任补语的常常是名词、形容词、副词、介词短语、分词、动词不定式等。如: 1)You should keep the room clean and tidy. 你应该让屋子保持干净整洁。(形容词) 2) We made him our monitor.(名词)我们选他当班长。 3) His father told him not to play in the street.(不定式)他父亲告诉他不要在街上玩。

appreciate表示感谢的用法

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interrupt的用法和短语例句

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5. Can I interrupt you just for a minute? 我能不能打断你们一下? 6. Can't you see I'm talking? Don't interrupt. 没看见我在说话吗?别插嘴。 7. Sorry to interrupt, but there's someone to see you. 对不起打扰一下,有人要见你。 8. It was all irrelevant, but I didn't dare interrupt him in midflow. 他说的事情全都不相关, 但我还是不敢中途打断他. 9. It is not polite to interrupt a speaker with frequent questions. 持续提问打断演讲者是不礼貌的. 10. It is not polite to interrupt when someone is talking. 在别人讲话时插嘴是不礼貌的. 11. You'd better not interrupt him. He is sleeping. 你别打扰他, 他在睡觉. 12. Don't interrupt; just hear me out. 别打岔, 听我说完. 13. Children must learn not to interrupt. 儿童应学会不要打断别人的讲话. 14. I don't interrupt him in his work. 我不想打扰他的工作.

(完整版)独立主格结构用法全解

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表语从句用法详解

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独立主格用法详解

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独立主格结构英语句子结构

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动名词的用法详解

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.mportant,essential,necessary等形容词不能用于上述结构。 3.用于“There be”结构中 eg.There is no saying when hell come. 4.动名词的复合结构作主语: 当动名词有自己的逻辑主语时,常可以在前面加上一个名词或代词的所有格,构成动名词的复合结构,动名词疑问句通常使用这种结构做主语 eg.Their coming to help was a great encouragement to us. Does your saying that mean anything to him? 二.作宾语 1.作动词的宾语 某些动词后出现非限定性动词时只能用动名词作宾语,不能用不定式。不定式通常指某种特定的动作,但动名词表示泛指,常见的此类动词有: admit,appreciate,excuse,stand,advise,allow,permit,avoid,consider,e njoy,finish,give up,cannot help,imagine,include,keep,understand,keepon,mind,report,risk,mis s,put off,delay,practise,resist,suggest,depend on,think about,set about,succeed in,worry about,burst out,insist on,feel like,be used

独立主格用法归纳总结

独立主格结构介词使用的问题 在“名词或代词+介词短语”这类独立主格结构中,当其中的介词是in时,其前后的两个名词通常不加任何修饰语(如物主代词或冠词),也不用复数。如: A girl came in, book in hand. 一个少女进来了,手里拿着书。 The soldiers dashed in, rifle in hand. 士兵们端着枪冲了进来。 但如果是其他介词,则不受此限制。如: We walked out, one behind the other. 我们一个接一个地走了出来。 He was waiting, his eyes on her back. 他在等着,眼睛望着她的背影。 The old woman sat down, traces of tears still on her cheeks. 老太太坐了下来,面颊上还带有泪痕 ===================================================================== 独立主格用作伴随状语 独立主格结构在句中一般作状语,表示时间、条件、原因、伴随状况等,还可以作定语。下面给大家列举一些独立主格用作伴随状语的例子: She gazed, her hands clasped to her breast. 她凝视着,双手叉在胸前。 We divided the work, he to dean the window and I to sweep the floor. 我们分了工,他擦窗户,我扫地。 A number of officials followed the emperor, some to hold his robe, others to adjust his girdle and so on. 许多官员尾随皇帝之后,有的拎着皇帝的衣袍,有的则给他整腰带,等等。 Their room was on the third floor, it’s window overlooking the sports ground. 他们的房间在三层楼上,窗户俯视着操场。 He guiding her, they stumbled through the street. 他引着她,两个人蹒跚地穿过那条街。 He, God willing, would be in the village before the second next month. 他,如果上帝允许,将于下月2日前来到这个村庄。 He died in 1892, his death being considered as a national calamity. 他死于1892年,他的逝世被认为是举国的不幸。 独立主格用作原因状语 独立主格结构在句中一般作状语,表示时间、条件、原因、伴随状况等,还可以作定语。下面给大家列举一些独立主格用作原因状语的例子: All our savings gone, we started looking for jobs. 积蓄全部用完了,我们就开始找工作。 The boy leading the way, we had no trouble finding the strange cave. 由那个男孩带路,我们很容易就找到了那奇怪的洞。 The monitor being ill, we’d better put the meeting off. 班长病了,我们最好还是延期开会吧。 The river having risen in the night, the crossing was impossible. 夜里河水上涨,渡河不可能了。 There being no further business to discuss, we all went home. 没有别的事可讨论,我们都回家了。 独立主格用作条件状语

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