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therefore的用法詳解
英語(yǔ)單詞(English words)的產(chǎn)生是漢英兩種語(yǔ)言雙向交流的產(chǎn)物，一些帶有中國(guó)特色的名稱和概念進(jìn)入了英語(yǔ)詞匯，同時(shí)還有一些英語(yǔ)詞匯進(jìn)入了漢語(yǔ)，在文化環(huán)境中衍生出新的含義，形成了英語(yǔ)詞匯的語(yǔ)義文化特征。下面是小編精心整理的therefore的用法詳解，歡迎大家分享。
therefore有兩種用法，一在整句中，一在分句中。
一、整句中時(shí)一般不放句末，句首后要有逗號(hào)，句中1、按一般副詞使用2、做插入語(yǔ)(這兩個(gè)分得清吧)
eg.1、Therefore，we must learn English well.
2、They therefore can learn English well.
3、Many fast food restaurant ,therefore,have red furniture or walls.
二、用在分句中，即一個(gè)句子一部分表示原因一部分表示結(jié)果。
這時(shí)一般詞前要用分號(hào)，其后用不用逗號(hào)無(wú)所謂。若第二個(gè)分句前是逗號(hào)或無(wú)符號(hào)，則要注意therefore是副詞，和so不一樣，要保持句子完整，應(yīng)用and therefore。
eg.1、I had a headache;therefore I could not go to your party.
2、I was ill,and therefore could not come.
3、These birds are very beautiful and therefore liked by many people.
注：therefore是副詞，但有時(shí)具有連詞作用
therefore，otherwise 和 thus 的區(qū)別
Therefore要加逗號(hào)，后面跟句子(注意是句子);
Thus不一定要加逗號(hào)，后面不一定跟句子。
I was helping my sister with her study.Therefore,I failed to pass the exam.
Air carry the virus to everywhere,thus causing the explosion of the disease.(無(wú)逗號(hào)，thus 后面不是句子)
Air carry the virus to everywhere.Thus,it causes the explosion of the disease.(逗號(hào)，thus 后面是句子)
用于句型“祈使句+or+陳述句”中，表示在以祈使句為條件下的相反假設(shè)，意為“否則，要不然”。
例如： Work hard,or you will fall behind.你要努力學(xué)習(xí)，否則會(huì)落后。
Get up early tomorrow,or you will miss the early train.你明天要早點(diǎn)起身，要不然就趕不上早班火車了。
Dont jump the queue,or other peopoe will not be pleased.別插隊(duì)，否則別人會(huì)不高興的。
可以把這類句型中的祈使句換為一個(gè)條件句(注意改寫時(shí)應(yīng)去掉連詞or)。
例如： Hurry up,or you will be late for the meeting.→If you dont hurry up,you will be late for the meeting.
otherwise 用作連詞，意思為“否則;要不然”，相當(dāng)于 or，or else 或 if not .
例如： We’ll go early，otherwise we may not get a seat. 我們得早點(diǎn)去，要不然就沒有座位了。
Seize the chance，otherwise you will regret it. 抓住機(jī)會(huì)，要不然你會(huì)后悔的。
I was ill that day，otherwise I would have taken part in the sports meet. 那天我病了，否則我會(huì)去參加運(yùn)動(dòng)會(huì)的。
We didn’t know you were in trouble at that time，otherwise we would have given you a hand. 我們當(dāng)時(shí)不知道你遇到了困難，要不然我們會(huì)幫助你的
because、for、therefore作“因?yàn)椤敝v的區(qū)別
for ,because,as,since這四個(gè)詞作為連詞，都有"因?yàn)?的意思，但它們?cè)谟梅ㄉ嫌袇^(qū)別：
because 是從屬連詞，接表示直接原因的從句，一般放在主句的后面，也可放在主句前面，它表示的語(yǔ)氣最強(qiáng)，在回答why的問(wèn)句時(shí)，必須用because。
例如：The swimming pool wont be open today because theyre making repairs.
游泳池今天不開放，因?yàn)樗麄冊(cè)谛蘩怼?/p>
Why did you move to France?
你們?yōu)槭裁窗岬椒▏?guó)?
Because my father found work in Paris.
因?yàn)槲腋赣H在巴黎找到了工作。
注意：在英語(yǔ)中用了because后，不可再用so。
as 是從屬連詞，說(shuō)明一般的因果關(guān)系，語(yǔ)氣比because弱，說(shuō)明比較明顯的原因，它引導(dǎo)的從句通常放在句首，有時(shí)也可放在句末。
例如：As it is raining, youd better take a taxi.
天下雨了，你最好乘出租車。
since 意為"既然"，表示對(duì)方已知的無(wú)需加以說(shuō)明的原因或事實(shí)，語(yǔ)氣比because弱，但是比as 強(qiáng)。
例如：Since we have no money, we cant buy that vase.
既然我們沒錢，我們就不能買那花瓶。
Since everybody is here, lets begin our party.
既然大家都到了，那就開始我們的聚會(huì)吧!
for 是并列連詞，用來(lái)附帶解釋說(shuō)明前一分句的原因或理由，for引導(dǎo)的并列句，一般放在所要說(shuō)明的句子的后面。
例如：I went to see him, for I had something to tell him.
我去見他，因?yàn)槲矣惺乱嬖V他。
只有therefore是表示結(jié)果的意思而不是原因.
Therefore，Thus ，hence，then，accordingly與So用法辨析
1.therefore adv.因此, 所以=for that reason=consequently常用于連接兩個(gè)并列分句，其前加“and”或分號(hào)“;”。
He was ill, and therefore could not come. 他病了, 所以未能來(lái)。
He has broken his leg and therefore he cant walk.他摔壞了腿，因此不能走路了。
We do not have enough money. Therefore we cannot afford to buy the new car.我們的錢不夠,因此買不成這輛新車。
2、so conj. adv因而, 所以, 結(jié)果是
It was late, so we went home. 天晚了, 所以我們就回家去了。
He was sick, so they were quiet.他病了，所以他們很安靜。
3、hence adv.因此, 從此
The town was built among the hills, hence the name Hilltown. 該城鎮(zhèn)修建在群山之中,故取名山城。
It is very late; hence you must go to bed.時(shí)間已經(jīng)很晚了，因此你必須睡覺去。(記住前面是分號(hào)，而不是逗號(hào))
4、then adv因此，就
Go into the cave, then they wont see you. 躲進(jìn)洞里去，那他們就看不到你了。
5、accordingly adv.因此, 從而;所以，因此結(jié)果;因此(偶作連詞使用conj.)
He was asked to leave the city and accordingly he went.有人叫他離開該城市,所以他就走了。
You may arrange accordingly.你可以權(quán)宜處理。
Mr Foster has never been to China. Consequently / Hence he knows very little about it.福斯特先生從未去過(guò)中國(guó),所以對(duì)中國(guó)了解得很少。
My car was broken down and consequently I was late. = in consequence
6、Thus adv.如此，像這樣;因此;于是
He sold his farm and thus he had enough money for his journey.他賣掉了農(nóng)場(chǎng)，這樣他就有足夠的錢旅行了。
There has been no rain — thus, the crops are drying.天沒下雨，因此莊稼要枯死了。