卜三金 朗播_姜莹老师 老师提问:
01-12
#召唤陪练狮# The central state, though often very rich and very populous, was intrinsically fragile, since the development of new international trade routes could undermine the monetary base and erode state power, as occurred when European seafarers circumvented Middle Eastern merchants after Vasco da Gama's voyage around Africa in the late fifteenth-century opened up a southern route.
姜老师,您好。麻烦问下为什么拆分出来的 as it occurred是定语从句??? 它修饰谁了
2019-01-12 17:14:32 来自 陪练狮
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同学你好,as occurred 中的 as 在这里引导了一个非限制性定语从句,as 代替前面的句子 the development of new international trade routes could undermine the monetary base and erode state power 
规则:as单独引导定语从句时,先行词可以是一个词,但更为常见的是:它的先行词是整个主句,有时也可以是一个短语。
例如:
The two brothers were satisfied with this decision,as was agreed to beforehand
两兄弟对此决定都很满意,这项决定事前已得到他们的同意。(先行词是decision) 
She is late,as is often the case.她迟到了,这是经常的事。(先行词是整个主句) 
He married her,as was natural.他和她结婚了,这是很自然的。(先行词是整个主句) 
To shut your eyes to facts,as many of you do,is foolish.视而不见———你们好多人都是如此———是愚蠢的。(先行词是整个不定式短语)
2019-01-14 09:46
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