連詞是一種虛詞，用於連接單詞、短語、從句或句子，在句子中不單獨用作句子成分。連詞按其性質可分為並列連詞和從屬連詞。並列連詞用於連接並列的單詞、短語、從句或句子，如and, but, or, for等；從屬連詞主要引出名詞性從句(主語從句、賓語從句、表語從句等)和狀語從句(時間狀語從句、條件狀語從句、目的狀語從句等)，引出名詞性從句的連詞如that, whether等，引出狀語從句的連詞如when, because, since, if 等。今天給大家整理的是表示轉折關係的並列連詞！大家一定要掌握哦！
表示轉折關係的並列連詞。I would have written before but I have been ill. 我本該早寫信的，但我生病了。
I have failed, yet I shall try again. 我失敗了，但我還要嘗試。
You like tennis, while I』d rather read. 你愛打網球，但我愛看書
Someone borrowed my pen, but I don’t remember who. 有人借了我的鋼筆，但我不記得是誰了。
He said he was our friend, yet he wouldn’t help us. 他說他是我們的朋友，但卻不肯幫助我們。
but的用法舉例
1. 連接詞或短語
It was a sunny but not very warm day. 那一天天氣晴朗，卻不太暖和。
He drives not carefully but slowly. 他開車不是很小心，而是開得很慢。
2. 連接句子
This isn’t a good one but it will answer. 這不太好，但可以將就用。
He looks honest, but actually he’s a rogue. 他看起來很老實，實際他是一個壞蛋。
She has had no answer to him but he gave no answer. 我向他說了早上好，但他沒有回應。
The ice remained, but there was no water underneath. 冰還在，但下面卻沒有水。
Mrs. Brown was about to begin, but Jennie spoke first. 布朗夫人正要開始講話，珍妮先講了。
At first he was a little shy, but now he acts more natural.
開始時他有些靦腆但現在他表現得很自然了。
There was a little trouble at first, but things were soon quiet. 起初有點小麻煩後來情況就平靜了。
3. 用於句首
But that question doesn’t arise. 但沒發生那個問題。
But in secret she was delighted. 但她暗中感到高興。
But what else can we do? 我們還能做什麼?
But in the end he gave in. 但最後他還是讓步了。
But there’s one thing we are agreed on. 但有一點大家的意見是一致的。
4. 用於道歉的表達之後
Sorry, but we’re behind schedule. 抱歉，我們落在計劃後了。
I’m frightfully sorry, but I can’t see you today. 太對不起了，我今天不能見你。
Excuse me, but I don’t think that’s quite true. 很抱歉，我認為這與事實略有出入。
5. 用於not…but…，表示「不是……而是……」
Not you but I am to blame. 不是你的錯而是我的錯。
6. 用在某些否定語後，表示「只……」：
He eats nothing but hamburgers. 他只吃漢堡包。
She knows no one but you. 她只認識你。
You have nobody but yourself to blame. 只能怪你自己。
No one but me saw her. 只有我看見他(from www.yygrammar.com)。
7. 用於next (last) but one 中，表示「隔壁再過去」「倒數第……」
He lives in the next house but one. 他住在隔壁再過去一家。
He was the last but one to arrive. 他是倒數第二個到的。
8. can’t help but 不由得不……
You can’t help but respect them. 你不由得不尊敬他們。
When they gave him a ticket to the game, he couldn’t help but go.
他們給了他一張看球賽的票，他不由得不去。
I can’t help but wonder what I should do next. 我不由得不想知道下一步該怎麼辦。
【注意】不要按漢語意思將「雖然…但是…」直譯為although…but…：
誤：Though we are poor, but we are happy. (去掉though或but中任一個)
but 與 however的用法區別
兩者均可表示轉折或對比，意為「但是」、「可是」、「然而」等，但有區別：
1. 表示轉折時，but 是連詞。如：
He is young but very experienced. 他雖年輕，但經驗很豐富。
He has three daughters but no sons. 他有3 個女兒，但沒有兒子。
He likes sports, but his wife likes music. 他喜歡運動，而他妻子則喜歡音樂。
2. however 表示「然而」、「可是」時，有的詞書認為它是連詞，有的詞書認為它是副詞。之所以將其視為
副詞，也許是因為像許多副詞一樣不僅能位於句首，而且能位於句中(注意前後使用逗號)，甚至句末
(注意其前也用逗號)。如：
Later, however, he changed his mind. 可是他後來改變了主意。
He hasn’t arrived. He may, however, come later. 他還沒有到，不過他等會兒可能會來。
He said that it was so; he was mistaken, however. 他說情況如此，可是他錯了。
注意：以上各例中的 however 不能換成 but，但可用 but 來改寫。如：
He said that it was so, but he was mistaken. 他說情況如此，可他錯了。
3. 當連接兩個句子時，其前通常應用分號，或另起新句。如：
It’s raining hard; however, I think we should go out. / It’s raining hard. However, I think we should go out. 雨下得很大，但我想我們還得出去。
注意：上例中的 however 不能換成 but，但可用 but 來改寫 (注意所用標點的變化)。如：
It’s raining hard, but I think we should go out.
yet的用法
1、yet用作連詞時，與but一樣也主要用於轉折，意為「但是」「而」：
I have failed, yet I shall try again. 我失敗了，但我還要嘗試。
The judge was stern, yet completely fair. 法官很嚴峻，卻完全公正。
They are the same, yet not the same. 它們又一樣，又不一樣。
It is strange, yet it is true. 那真是怪事，然而卻是事實。
I』ve been away only for three years, yet I can hardly recognize my hometown.
我僅在外三年，可我幾乎認不出我自己的故鄉了。
He said he was our friend, yet he wouldn’t help us. 他說他是我們的朋友，但卻不肯幫助我們。
2、有時用在句首。如：
Yet the house was cheerful. 但屋子裡顯得很歡快。
Yet its population has doubled. 但它的人口翻了一番。
3、yet有時可與並列連詞and或but連用，構成習語and yet和but yet，意為「雖然如此」「可是」
「然而」，與單獨使用的yet意思相同。如：
He’s not really nice-looking, and yet he has enormous charm. 他並不十分好看，可是他很有魅力。
She’s a funny girl, but yet you can’t help liking her. 她是一個奇怪的姑娘，但你禁不住會喜歡她。
I gave him ten pounds (and) yet he was not satisfied. 我給了他十鎊但他仍不滿足。
She’s vain and foolish, and yet people like her. 她很虛榮愚蠢，但人們卻喜歡她。
She drove very fast to the airport, but [yet, and yet, but yet] she missed the plane.
她開快車去機場，可還是誤了飛機。
4、根據英語習慣，although不能與連詞but搭配使用，但是although可以與yet搭配連用（此時的yet可視為副詞）。如：
Although we are poor, yet we are happy. 儘管我們窮，但我們很快活。
Although we have made some progress, yet we still have a long way to go.
我們雖然取得了些進步，但還是遠遠不夠的。
連詞while考點知識歸納
while是大家比較熟悉的一個詞，但是許多人對它的了解是不全面的，你可能只知道它表示
「當……的時候」，甚至可能還知道它與when, as的用法區別。但是，非常遺憾，你所知道的這些東西都
是有關while用法的「基礎知識」，卻不是一般英語考試的「考點知識」。請看下面兩道考題：
1、考查表示時間的用法，其意為「當……的時候」。如：
We must strike while the iron is hot. 我們要趁熱打鐵。
Stand still while I take your photograph. 我給你拍照時站著不要動。
Have we got enough books to read while we are on holiday? 假期裡我們有足夠的書看嗎?
Were there any calls for me while I was out? 我出去的時候，有人來過電話嗎?
She hates anyone listening while she is telephoning. 她打電話時不願讓任何人聽。
2、考查表示讓步的用法，其意為「儘管」「雖然」。如：
While the work was difficult, it was interesting. 雖然工作有難度，但很有趣。
While I understand what you say, I can’t agree with you. 雖然我理解你的意思，但我還是不同意。
While the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
雖然網際網路很有幫助，但我還是認為在其上花太多的時間不是個好主意。
While we don’t agree we continue to be friends. 儘管我們意見不同，我們還是朋友。
While I did well in class, I was a poor performer at games. 雖說我學習不錯，我運動卻不行。
While a few became richer, many did not. 雖然一些人變得更富有了，但多數人並非如此。
3、考查表示對比的用法，其意為「而」「但」。如：
In some places women are expected to earn money while men work at home and raise their
children. 有些地方婦女掙錢，而男子則在家裡持家和帶孩子。
I went swimming while the others played tennis. 我去遊泳，而其餘的人則去打網球了。
Air is a fluid but not a liquid, while water is both a fluid and a liquid.
空氣是流體不是液體，水是流體也是液體。
Some people waste food while others haven’t enough. 一些人糟踏食物而另一些人卻食不果腹。
Some people waste food while others haven’t enough. 一些人糟踏食物而另一些人卻食不果腹。
I went swimming while the others played tennis. 我去遊泳，而其餘的人則去打網球了。
Prices are rising sharply, while incomes are lagging far behind. 物價飛漲而收入卻遠遠落後。
注意：這樣用時，while引出的句子通常位於末，但有時也可位於句首。如：
While most children learn to read easily, some need extra help.
大多數兒童學會閱讀很容易，有一些兒童卻需要特別幫助。
While some languages have 30 or more different vowel sounds, others have five or less.
有些語言有30個或更多的元音，而其他語言只有5個或更少的元音。
While Deauville is a holiday resort, Trouville is more of a working town.
特維爾是個度假勝地，而特魯維爾更多的卻是個工業城市。
4、考查其省略用法，即主句與從句主語相同，且從句謂語動詞含有動詞be時，通常可省略從句主語和動詞be。如：
While (he was) in prison, she wrote her first novel. 她在獄中寫出了第一部小說。
He had strayed from home while still a boy. 他小時候就離開家到處流浪了。
He fell asleep while (he was) doing his homework. 他做著做著功課就睡著了。
I was only listening to the radio with half an ear, while (I was) preparing some food.
我正在做吃的東西，沒太留心聽收音機。
愛V高中英語來源：網絡綜合，僅供學習交流