是why還是because？

1、是是why還是還是because？由一道選擇題想起：由一道選擇題想起：有這樣一道選擇題： Too much time on it. But I still havent worked it out. I suggest you giving it up. It is _ this question is too difficult.A. that B. why C. which D. because四個(gè)選項(xiàng)中除that與which明顯不可選外，剩下的why和because卻是讓學(xué)生糾結(jié)。這個(gè)問(wèn)題到底怎么解決呢？一、認(rèn)識(shí)why與because之間的關(guān)系1. Why是特殊疑問(wèn)副詞，句中使用這一疑問(wèn)

2、副詞表示對(duì)質(zhì)問(wèn)為什么會(huì)有這一結(jié)果?；卮鹚鼤r(shí)必須使用從屬連詞 because，表示對(duì)前者質(zhì)問(wèn)的回應(yīng)。如： Why are you late for school? Because my bike has broken on the way, Why does the GTP keep falling these years? Because theres something wrong with the governments macro-economic control.2. 表示“的原因是因?yàn)椤边@一意義時(shí)，要用that而不是用because來(lái)引導(dǎo)表語(yǔ)從句。因?yàn)橹髡Z(yǔ)the reason why

3、 本身就是原因，再用because則是重復(fù)。如： The reason why he cant come is that he is tired. 他不能來(lái)的原因是因?yàn)樗哿恕?The reason why people find it so hard to be happy is that they always see the past better than it was. 人們很難開(kāi)心起來(lái)的原因就在于總是把過(guò)去看得太過(guò)美好。3. 注意漢語(yǔ)中說(shuō) “因?yàn)?所以”在英語(yǔ)中不能說(shuō) “Because so ” 如：因?yàn)橄掠?，所以我們呆在家里。正：Because it was raining, w

4、e stayed at home.正：It was raining, so we stayed at home.誤：Because it was raining, so we stayed at home.4. because是從屬連詞，引導(dǎo)原因狀語(yǔ)從句；而because of 是組合介詞，引導(dǎo)介詞短語(yǔ)作句子的原因狀語(yǔ)。如：He cant come because he is really occupied.= He cant come because of his occupation.（注意這里不能說(shuō)“ because of he is really occupied”）他來(lái)不了了因?yàn)樗麑?shí)

5、在是走不開(kāi)。二、why-clause與because-clause用作表語(yǔ)從句I. That is why 1. 前因后果 即先講述原因，后肯定結(jié)果。 他辛辛苦苦地干了十年。那就是為什么他現(xiàn)在看起來(lái)比較蒼老。 He has worked hard for ten years. That is why he looks so old. 吸煙有害于健康， 這就是為什么每年都有幾百萬(wàn)人死于這種不良習(xí)慣的的緣故。Smoking does harm to your health. That is why millions of people die from the habit.由上例句可知，why引導(dǎo)

6、的表語(yǔ)從句通常用于針對(duì)前面已經(jīng)說(shuō)明過(guò)的原因進(jìn)行總結(jié)。2. why引起表語(yǔ)從句時(shí)，句子主語(yǔ)可以是代詞，也可以是名詞或what從句。此時(shí)，why從句表示該名詞或what從句的具體內(nèi)容。如： One question is why pandas are so difficult to find in thisarea. 一大疑問(wèn)就是熊貓為什么在該地區(qū)是如此難找到。 What puzzles me is why they didnt show up.令我百思不解的是他們卻為什么沒(méi)有出現(xiàn)。 What I want to know is why you helped me so much. 我想知道的是你

7、為什么給我這么多幫助。 II. That is because 前果后因 即先擺出結(jié)果，后再?gòu)?qiáng)調(diào)原因。 助手替教授做了發(fā)言, 因?yàn)樵摻淌谝蚣捕荒苷f(shuō)話(huà)。The assistant made the speech in place of the professor. That is because the professor has a disease which prevents him from speaking. 兩座塔樓的樓頂間距比樓底間距要大，是因?yàn)榈厍虮砻娌皇瞧降?，而是圓的。The space between the two towers is wider than that at

8、thebottoms. This is because the surface of the earth is not flat but round. 我想跟你談一談。那是因?yàn)槟阏\(chéng)實(shí)幽默。 I like to talk with you. Thats because you are honest andhumorous.三、關(guān)于It is why 和It is because 問(wèn)題1. It is why 其實(shí)是不存在的。正確的是: It is the reason why why是關(guān)聯(lián)副詞，引導(dǎo)定語(yǔ)從句作reason的定語(yǔ)。 這就是為什么他昨天沒(méi)有參加會(huì)議的原因。It is the reas

9、on why he didnt take part in the meeting yesterday. 這就是為什么你要在備注欄上提到的原因。It is the reason why you need to mention on the remarkcolumn.2. It is because 屬于強(qiáng)調(diào)句結(jié)構(gòu)的省略形式, 被強(qiáng)調(diào)的是原因狀語(yǔ)從句,而“that +主句” 部分被省略了。如： 之所以沒(méi)有人能回答這個(gè)問(wèn)題,是因?yàn)樗y了。Nobody can answer the question. It is because this question is too difficult.= It

10、 is because this question is too difficult that nobody can answer the question. 有所不知, 蓋未學(xué)也。If there is something we do not know, it is because we havent learnt them. = It is because we havent learnt them that there is something we do not know. 有人會(huì)出現(xiàn)在你的夢(mèng)中，那是因?yàn)槟阆胍?jiàn)他（她）。If someone might be in your dream, it is because you wanna see him or her.= It is because you wanna see him or her that someone might be in your dream.通過(guò)以上分析可知，why是表示詢(xún)問(wèn)某結(jié)果產(chǎn)生的原因，而 because 是為某結(jié)果提供原因。why引導(dǎo)的從句作表語(yǔ)一般是用在 That / (What ) is why 中; because引導(dǎo)的從句作表語(yǔ)一般是用在That is because