therefore的用法以及與because、for的區(qū)別(2)
Don't jump the queue,or other peopoe will not be pleased.別插隊(duì),否則別人會不高興的。
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 don't 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,要不然你會后悔的。
I was ill that day,otherwise I would have taken part in the sports meet. 那天我病了,否則我會去參加運(yùn)動會的。
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,要不然我們會幫助你的
because、for、therefore作“因?yàn)?rdquo;講的區(qū)別
for ,because,as,since這四個(gè)詞作為連詞,都有"因?yàn)?quot;的意思,但它們在用法上有區(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,它表示的語氣最強(qiáng),在回答why的問句時(shí),必須用because。
例如:The swimming pool won't be open today because they're making repairs.
游泳池今天不開放,因?yàn)樗麄冊谛蘩怼?/p>
Why did you move to France?
你們?yōu)槭裁窗岬椒▏?
Because my father found work in Paris.
因?yàn)槲腋赣H在巴黎找到了工作。
注意:在英語中用了because后,不可再用so。
as 是從屬連詞,說明一般的因果關(guān)系,語氣比because弱,說明比較明顯的原因,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, you\'d better take a taxi.
天下雨了,你最好乘出租車。
since 意為"既然",表示對方已知的無需加以說明的原因或事實(shí),語氣比because弱,但是比as 強(qiáng)。
例如:Since we have no money, we can't buy that vase.
既然我們沒錢,我們就不能買那花瓶。
Since everybody is here, let's begin our party.
既然大家都到了,那就開始我們的聚會吧!
for 是并列連詞,用來附帶解釋說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.