He looks as if (as though) he had been hit by lighting. 他那样子就像被雷击了似的。(与事实相反,谓语用虚拟语气。)
It looks as if the weather may pick up very soon. 看来天气很快就会好起来。(实现的可能性较大,谓语用陈述语气。)
说明:as if / as though也可以引导一个分词短语、不定式短语或无动词短语。例如:
He stared at me as if seeing me for first time. 他目不转睛地看着我,就像第一次看见我似的。
He cleared his throat as if to say something. 他清了清嗓子,像要说什么似的。
The waves dashed on the rocks as if in anger. 波涛冲击着岩石,好像很愤怒。
19.3 原因状语从句
比较because, since, as和for:
1)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 didnt go, because I was afraid. 我不去是因为我怕。
Since /As the weather is so bad, we have to delay our journey. 天气那么糟,旅行推迟了。
2)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,而是多种情况加以推断,就只能用for。例如:
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2016-02-29
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