2013年职称英语考试句型语序:从句类型(2)5 I/ l2 b2 p- e* e" r( f" R+ ~$ ?
原因状语从句
0 R2 V5 I6 b. s I) because, since,和as引导的原因状语从句
: X* r3 ^7 l% D+ C# E% |9 q9 q. m5 r 1. 其中because语气最强,多表示所述理由是本句重点,强调别人未知的事实,故because引导的从句多放在句末,回答why的问句时,只能用because。
: y( m% r! |2 b+ ]2 `; a 在语气上since次之,as最弱。since和as表示的原因,多是已知的既成事实,原因以外的才是叙述的重点,因而两者多用于句首。
) Q& ^- I+ a2 O8 L% T5 { As it is raining, let’s stay indoors.
' O7 p" u8 r! F1 f Since you have no license, you are not allowed to drive. + B0 k- M5 {/ q6 @) z( v+ s
用强调句式强调原因状语从句时,只能用because引导。
! N* w7 M% V6 R: I$ ? It was because he was careless that he failed. k, V8 C3 p1 h8 B. P/ d/ J
在because引导的从句中,如果主句是否定句,而主句和后面的从句之间没有逗号分开,这时not 修饰的是后面的整个从句。 ' h7 M- A# [. r; J# O& m6 {; k
The machine did not stop because the fuel was used up. 1 p& B. h! i# s
机器停了下来,并不是因为燃料用光了。
$ m0 R5 s" }3 T h 如果主句和从句间用逗号分开,意思就不同了。 转自:考试网 - [Examw.Com]
+ A2 S _/ W. t4 L& i I was not kind to him, because he was rude. 我对他不友好,因为他无礼。 0 H' J* c1 i6 W% K! w' w0 T
II) for 和because 的区别
5 y) W6 Q# c! H- ~/ [ because 表示因果关系,语气最强;而for引导的是并列句,它只是对前面分句进行解释, 说明推断的理由,并且只能后置。 / s- p1 R5 g8 M% m' }- ?1 r8 f) U
It must have rained last night, for the ground is wet this morning.
2 H$ b2 w4 ]4 u+ }" N$ W7 E! {4 H (该句不能用because, 因为现在地面湿不是导致昨夜下雨的原因) 4 ?7 K0 A" R2 q4 j+ s* |& o
It is morning, for the birds are singing. 天亮了, 鸟儿在鸣叫。
; O3 ]( K( _( c7 |. {' ?, x (鸟鸣不能引起天亮,所以本句不能用because代替for) |