初中英語(yǔ)狀語(yǔ)從句知識(shí)點(diǎn)：原因狀語(yǔ)從句
原因狀語(yǔ)從句
連詞有：because as since now that等
(1) 區(qū)分because, as, since, for
?、?because表示人們不知道的直接的原因或理由，著重點(diǎn)在從句，其所引導(dǎo)的從句，為全句句意的中心所在。通常用于回答why引出的疑問(wèn)句，語(yǔ)氣最強(qiáng)，除特別強(qiáng)調(diào)外，該從句一般位于主句后面，不能與so連用但是可以與so進(jìn)行同義句轉(zhuǎn)換。
I didnt go aboard with her because I couldnt afford it.
我沒(méi)有和她一起出國(guó)是因?yàn)橘M(fèi)用太高。
② as引導(dǎo)的原因狀語(yǔ)從句所傳遞的通常是已知信息，從句多位于主句之前，表示雙方那個(gè)已知的理由，如：
As I didnt know the way，I asked a policeman.
我不認(rèn)識(shí)路，因而問(wèn)警察。
③ since引導(dǎo)的原因狀語(yǔ)從句多表示大家眾所周知的理由，如：
Since traveling by air is much faster, they decided to take a plane.
既然乘飛機(jī)旅行快得多，他們就決定坐飛機(jī)。
?、?for表示的理由是附加的或推斷的，并非此原因，通常與主句用逗號(hào)隔開(kāi)，不位于句首，如：
He must be not at home, for the telephone isnt answered.
用because, as, since, for 填空：
Well have to go to bed early ___________ well start off early tomorrow.
___________ you know all about it, tell me please.
____________ all the seats were taken, I had to stand.
He must be at work, __________ the light in his office is still on.
Lily didnt go to school ___________ she was ill.
=_________________________________________________________.
(2) now that引導(dǎo)的原因狀語(yǔ)從句
Now that 因?yàn)?既然，通常可以和since換用。用來(lái)表示一種新的情況，再加以推論。如：
Now(that) you have passed your test, you can drive on your own.
你既已考試合格，就可以獨(dú)自開(kāi)車了。
返回：初中英語(yǔ)知識(shí)點(diǎn)詳解狀語(yǔ)從句篇
原因狀語(yǔ)從句
連詞有：because as since now that等
(1) 區(qū)分because, as, since, for
?、?because表示人們不知道的直接的原因或理由，著重點(diǎn)在從句，其所引導(dǎo)的從句，為全句句意的中心所在。通常用于回答why引出的疑問(wèn)句，語(yǔ)氣最強(qiáng)，除特別強(qiáng)調(diào)外，該從句一般位于主句后面，不能與so連用但是可以與so進(jìn)行同義句轉(zhuǎn)換。
I didnt go aboard with her because I couldnt afford it.
我沒(méi)有和她一起出國(guó)是因?yàn)橘M(fèi)用太高。
?、?as引導(dǎo)的原因狀語(yǔ)從句所傳遞的通常是已知信息，從句多位于主句之前，表示雙方那個(gè)已知的理由，如：
As I didnt know the way，I asked a policeman.
我不認(rèn)識(shí)路，因而問(wèn)警察。
③ since引導(dǎo)的原因狀語(yǔ)從句多表示大家眾所周知的理由，如：
Since traveling by air is much faster, they decided to take a plane.
既然乘飛機(jī)旅行快得多，他們就決定坐飛機(jī)。
?、?for表示的理由是附加的或推斷的，并非此原因，通常與主句用逗號(hào)隔開(kāi)，不位于句首，如：
He must be not at home, for the telephone isnt answered.
用because, as, since, for 填空：
Well have to go to bed early ___________ well start off early tomorrow.
___________ you know all about it, tell me please.
____________ all the seats were taken, I had to stand.
He must be at work, __________ the light in his office is still on.
Lily didnt go to school ___________ she was ill.
=_________________________________________________________.
(2) now that引導(dǎo)的原因狀語(yǔ)從句
Now that 因?yàn)?既然，通?？梢院蛃ince換用。用來(lái)表示一種新的情況，再加以推論。如：
Now(that) you have passed your test, you can drive on your own.
你既已考試合格，就可以獨(dú)自開(kāi)車了。
返回：初中英語(yǔ)知識(shí)點(diǎn)詳解狀語(yǔ)從句篇
