來源:網(wǎng)絡(luò)資源 2021-12-20 12:05:15
是用來說明引起主句這個(gè)結(jié)果的原因的從句,在初中階段引導(dǎo)原因狀語從句的從屬連詞主要的有because, as, since,for等。例如:
1.I didnt go to school yesterday because I was ill. 我昨天沒去上學(xué),因?yàn)槲疑×恕?/p>
2. Since everybody is h ere, lets begin our meeting. 既然大家都來了, 讓我們開始開會(huì)吧.
3. As you are in poor health, you should not stay up late. 既然你身體不好, 你就不該熬夜.
4.I asked her to stay to tea, for I had something to tell her. 我請(qǐng)她留下來喝茶,因?yàn)槲矣惺乱嬖V她.
原因狀語從句應(yīng)注意的問題
1、because , since , as , for,辨析
1)because語勢(shì)最強(qiáng),用來說明人所不知的原因,回答why提出的問題。當(dāng)原因是顯而易見的或已為人們所知,就用as或 since。
I did nt go, because I was afraid.
Since /As the weather is so bad, we have to delay our journey.
2)由because引導(dǎo)的從句如果放在句末,且前面有逗 號(hào),則可以用for來代替。但如果不是說明直接原因,而是多種情況加以推斷,就只能用for。例:
He is absent today, becaus e / for he is ill. He must be ill, for he is absent today.
3) as和for的區(qū)別:通常情況下,as引導(dǎo)的從句在主句前,for引導(dǎo)的從句在主句后。例: As the weather is cold, I stay at home.(同義句) I stay at home, for the weather is cold.
2、because習(xí)慣上不與so連用
漢語習(xí)慣上說因?yàn)樗,但英語習(xí)慣上卻不能將 so與because 連用:
正:Because it was raining, we stayed at home. / It was raining, so we stayed at home.
誤:Because it was raining, so we stayed at h ome. 因?yàn)橄掠辏晕覀兇粼诩依铩?/p>
3、because 從句與 because of短語的轉(zhuǎn)換
Because引導(dǎo)的原因狀語從句有時(shí)可與because of 短語轉(zhuǎn)換,because of后加的原因可以為好或壞 ,但最正規(guī)的還是because。
He cant come because he is ill. / He cant come because of his illness. 他因病不能來。
I said nothing about it because his wife was there. / I said nothing about it because of his wifes being th ere. 因?yàn)樗拮釉谀莾,我?duì)此事只字未提。
常見考法
對(duì)于原因狀語從句的考查,多以單選和完形填空的形式,從連詞的意義角度讓大家選擇連詞。
典型例題:He fou nd it increasin gly difficult to read, ____ hi s eyesight was beginning to fail.
A. and B. for C. but D. or
解析: his eyesight was beginning to fail是he found it increasingly difficult to read的原因, 因此本題應(yīng)選用可以表示原因的連詞for引導(dǎo)原因狀語從句。
答案: B
誤區(qū)提醒
除了because , since , as , for這四個(gè)詞的辨析外,對(duì)于because 從句與 because of短語的區(qū)分也是難點(diǎn)之一。Because引導(dǎo)的原因狀語從句有時(shí)可與because of 短語轉(zhuǎn)換,because of后跟的是短 語 ,because后跟的是句子。
典型例題:He didnt go to work the heav y rain.
A .because B.because of C.so D.since
解析:題干的意思是 由于那場(chǎng)大雨,他沒有去上班 ,the heavy rain.表示原因,排除C; since 和 because 表示原因,后面跟的是從句,也就是說必須是一個(gè)完整的句子,本題中the heavy rain沒有主語和謂語,.只是一個(gè)短語,所以排除A和C;because of表示由于,后跟名詞、代詞或短語。
答案:B
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