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表示"原因"的原因状语从句,常用的引导词是"because, since, as, for",而"seeing that, now that, in that, considering that, given that"是常用到的特殊引导词。例如:Now that everybody has come, let's begin our conference.(既然每个人都到了,让我们开始会议吧。)
标签:从句、原因 难度(7)|用途(4)|标记( )
原因状语从句中,because语势最强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的,或已为人们所知,就用as或since。例如:I didn't go because I was afraid.或者:Since/As the weather is so bad, we have to delay our journey.
标签:词语、语气 难度(6)|用途(5)|标记( )
在原因状语从句中,由because引导的从句如果放在句末,且前面有逗号,则可以用for来代替。但如果不是说明直接原因,而是对情况加以推断,就只能用for。例如:He is absenttoday, because/for he is ill.或者:He must be ill for he is absent today.
标签:从句、位置 难度(5)|用途(4)|标记( )
很多人都觉得原因状语从句中的as和for比较容易混淆,它们之间的区别是:通常情况下,as引导的从句在主句前,for引导的从句在主句后。例如:用"as"引导的句子是"As the weather is cold, I stay at home.";用"for"引导的句子则是"I stay at home for the weather is cold."
标签:意义、原因 难度(5)|用途(6)|标记( )
热门词汇
considering v. 考虑到
conference n. 会议
afraid adj. 害怕的
journey n. 旅行
absent adj. 缺席的
weather n. 天气
stay vi. 停留
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英文知识--so as to
So as to既可表示目的,意思是"为了,目的是"。例如:He ran quickly so as to catch the last bus.(他跑得很快以便赶上末班车。)它又可表示结果,意为"为的是,结果使......",其位置一般在句中,它的否定结构是so as not to。例如:Tom kept quiet about the accident so as not to lose his job.(汤姆对事故保持沉默是为了不丢掉他的工作。)