be of +n.是比較常見的表達(dá)式，除了熟知的相當(dāng)于形容詞的用法之外，依據(jù)n. 的種類不同，有多樣的理解。一起看看究竟。
介詞of自身有豐富含義，在be of +n.中 of意為：屬于；具有...(特征);n.類別包括度量名詞、物質(zhì)名詞、普通名詞及抽象名詞。
一、be of+度量名詞：具有...，說明主語(體)特征
?度量名詞有： age?/ size/ color/weight/height?/price/opinion?/shape?/kind/way?等
When I was of your age，?I entered the war.
當(dāng)我是你這個(gè)年齡的時(shí)候，我就去打仗了。
These flowers are of different colors.
這些花的顏色都不同。
I was absolutely outraged that I could be even mentioned in an article of this kind.
我十分惱火，我的名字居然出現(xiàn)在這種文章里。
Mr. O'Friel made it clear that further insults of this kind would not be tolerated.
奧弗瑞爾先生把意思說得清清楚楚，以后這種侮辱是不會被容忍的。
注：在此結(jié)構(gòu)中，如果后面的名詞前有不定冠詞 a / an?，則這個(gè)冠詞相當(dāng)于?the same.
The two boys are of an age./ The two boys are of the same age.
這兩個(gè)男孩同齡。
The twin sisters are of a size and the skirt fits each of them exactly.
雙胞胎姐妹的身材一樣，這件裙子兩個(gè)人穿都非常合適。
They are of one mind in their opposition to the proposal.
他們在反對這個(gè)提議的問題上意見一致。
二、be of +?物質(zhì)名詞：由...制/構(gòu)成,表明主語(體)成分，
相當(dāng)于be made of，be built of，be made up of?等。
The necklace is?（made）?of glass.
這條項(xiàng)鏈?zhǔn)怯刹Ａе瞥傻摹?/p>
No, it shall be of gold and silver with diamond buttons.
不，應(yīng)該是金的，銀的，帶鉆石紐扣的。
Our class is?（made up）?of over 50 students.
我們班有 50?多個(gè)學(xué)生。?
The crisis faced over the next few months is of an entirely different scale...
接下來幾個(gè)月內(nèi)將要面臨的危機(jī)規(guī)模將是無法相比的。
It is their major source of protein in winter.
它是它們在冬天提供的蛋白質(zhì)的主要來源。
Would you say what you felt was a feeling of betrayal?...
你是否覺得有一種被人出賣的感覺？
She let out a little cry of pain.
她疼得輕呼了一聲。
The visitors are quite spellbound by the local decorations of wood and straw.
游客們被用木頭和稻草制成的本地飾品迷住了。
He is considered to be of noble origins.
人們都認(rèn)為他出身高貴.
I suppose it's stupid of us not to be able to make up our own minds...
我們自己都沒辦法拿定主意，這真是太傻了。
三、be of?+ 普通名詞：屬于...表示主語(體)成分所屬關(guān)系，
相當(dāng)于?belong to .
China and India are of the third world.
中國與印度同屬于第三世界。
Workers and peasants are of one family.
工人和農(nóng)民是一家。
The company allowed members of the research team to sift out stones not deemed to be of gem quality.
這家公司允許研究小組的成員篩除被視為沒有達(dá)到珠寶質(zhì)量的石頭。
It's the stage in the middle of the journey when people feel youth vanishing, their prospects narrowing and death approaching.
這是在旅程中間階段，人們感到年輕人在消失，他們的前景在縮小，死亡即將來臨。
As you make reading a regular part of your life, you'll make more connections, stay more focused and understand the text better.
當(dāng)你讓閱讀成為你生活的一部分時(shí)，你會建立更多聯(lián)系，更加專注，更好地理解文本。
A 90-year-old has been awarded "woman of the year" for being Britain's oldest full-time employee-still working 40 hours a week.
一名90歲員工因成為英國最年長的全職員工，被授予“年度女性”，每周工作40小時(shí)。
A decade of data breaches (數(shù)據(jù)侵入) of personal information has led to a situation where scammers can easily learn your mother's name, and far more.
十年來，個(gè)人信息的數(shù)據(jù)泄露（數(shù)據(jù)侵入）導(dǎo)致了一種騙子可以很容易地知道你母親的名字，甚至更多的情況。
A quick review of successes and failures at the end of year will help shape your year ahead.
在年底快速回顧一下成功和失敗將有助于塑造你的未來一年。
四、be of +?形容詞最高級/序數(shù)詞+(n). :歸為...，表示主語(體)類別
相當(dāng)于be one of... .
His temper is of the quickest.
他的脾氣是最急躁的。
Mr Liu is of the best teachers in our school.
劉老師是我們學(xué)校最好的老師之一。
A build-it-yourself solar still is (one) of the best ways to obtain drinking water in areas where the liquid is not readily available.
在液體不易獲得的地區(qū)，一個(gè)自己建造的太陽能仍然是獲得飲用水的最佳方式之一。
A grasp of how to manage color in your spaces is (one) of the first steps to creating rooms you'll love to live in.
掌握如何管理你的空間中的顏色是創(chuàng)建你會喜歡居住的房間的第一步。
Even if other people didn't notice it, it mattered to him that his work should be of the best quality.
即使其他人沒有注意到，他的工作應(yīng)該保證最好的質(zhì)量，這對他來說很重要。
Our commitment will be of the highest order.
我們的承諾將是最高級的。
五、be of+?抽象名詞:具備、具有,描述主語(體)類別
相當(dāng)于be +該抽象名詞相應(yīng)的同根形容詞
抽象名詞有：assistance, benefit, capacity, effect, information, help，importance，interest，significance，use，value等
They are of great help （:very helpful) to learners of English.
他們對英語學(xué)習(xí)者來說是很有幫助的。
The press conference seems of great importance(:very important).
這個(gè)新聞發(fā)布會看來很重要。
In her search to live a life of purpose(: a purposeful life), Leah left her high-paying accounting job, her husband, and her home.
為了追求有目標(biāo)的生活，利亞離開了她高薪的會計(jì)工作、她的丈夫和她的家。
What are some of the practical benefits likely to be of this line of research?
這一研究方法可能會產(chǎn)生哪些實(shí)際效益？
Can I be of service to anyone?
有誰需要我?guī)兔幔?/p>
His intercession could be of help to the tribe.
他的調(diào)解可能會幫上該部落的忙。
The contents of this booklet should be of use to all students.
這本小冊子的內(nèi)容應(yīng)該會對所有的學(xué)生都有用處。
注：①抽象名詞前可有形容詞修飾：
Their parents can rest assured that their children's safety will be of paramount importance.
他們的家長們可以盡管放心，他們孩子們的安全將是最為重要的。
Be of good heart, thou shalt suffer no harm.
大膽做吧，你不會受到傷害的。
The lecture will be of especial interest to history students.
學(xué)歷史的學(xué)生會對這個(gè)講座特別有興趣。
I think our main feeling would be of an immense gratitude.
我覺得充斥我們心中的將是一種強(qiáng)烈的感激之情。
The tests have been shown to be of dubious validity.
這些試驗(yàn)的有效性已顯得令人懷疑.
②抽象名詞前可有any,great， little, much, no, some, vital等修飾間接表示程度：
Can I be of any assistance to you?
我能幫你什么忙 嗎 ?
Thus, wearing the right brand of clothes or shoes may be of the utmost importance.
因此，穿合適品牌的衣服或鞋子可能是最重要的。
The witness's descriptions were too imprecise to be of any real value.
證人的描述太不明確，沒有任何實(shí)際價(jià)值。
It would be of great harm to her all her life.
這將對她的一生造成極大的傷害。
If parents have poor computer skills, they will be of little or no help with homework, which can make them upset.
如果父母的電腦技能很差，在做家庭作業(yè)時(shí)他們就只能幫上一點(diǎn)忙或根本幫不上忙，這可能會讓他們感到很沮喪。
The story will only be of marginal interest to our readers.
我們的讀者對這則故事不會很感興趣。
The symbolism of every gesture will be of vital importance during the short state visit.
在這次短暫的國事訪問期間，一舉一動(dòng)都將有著至關(guān)重要的象征意義。
The medicine seems to be of no effect on my headache.
這藥對我的頭痛似乎沒有效果。
Flouting the law was too much of a risk.
藐視法律太危險(xiǎn)了。
The new discovery is bound to be of great service to mankind.
這項(xiàng)新發(fā)現(xiàn)對于人類必定大有用處.
Needless to say, people like Veiseh are of great interest to neuroscientists hoping to understand the way the brain records our lives.
不用說，像維瑟這樣的人對神經(jīng)科學(xué)家希望了解大腦記錄我們生活的方式非常感興趣。
③of 前也有加比較級表示程度的遞增或遞減：
Your extra fat may be more of a health risk than you realize...
多余的脂肪對健康的威脅可能比你意識到的要大。
As time goes by, sleeping becomes less of a problem.
隨著時(shí)間的推移，睡眠逐漸不再成為問題。
This is more of a sitting room than a kitchen.
這更像個(gè)起居室，而不是廚房。/ 與其說這是一個(gè)廚房，還不如說是個(gè)起居室。
John is not as much (of) a musician as a singer.
與其說約翰是個(gè)音樂家，不如說他是個(gè)歌唱家。
六、be+of+名詞 句法功能
1.作表語
Don’t throw anything that may be of use.
不要把任何有用的東西扔掉。
(=Don’t throw anything that may be useful.)
Flowers are of many colors.
花的顏色很多。
French wine is of high quality and is sold all over the world.
法國葡萄酒質(zhì)量很高，銷往世界各地。
2.作后置定語
Your sister is a girl of wisdom.
你妹妹是一位有智慧的女孩。
(：Your sister is a wise girl.)
We don’t think there is anything of interest in your pictures.
我們認(rèn)為你的畫并沒有什么有趣的地方。
(：We don’t think there is anything interesting in your pictures.)
3.作補(bǔ)足語
He found himself of absolutely contradictory points of view.
她發(fā)現(xiàn)自己處于完全矛盾的觀點(diǎn)之中。
This town is thought (to be) too much of a backwater.
這個(gè)城鎮(zhèn)被認(rèn)為太閉塞。
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