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望采纳
追问那连词在引导词语的时候,怎么分别是不是连词呢?举几个例子吧。
追答介词出现在名词、代词、动名词或动名词短语前,而 连词则出现在句子前.如:
* for,
--put the house up for sale 把房子拍卖(for 后面是名词 sale,属于介词)
--come here for finding some water 来这里找水 (for 后面是动名词短语 finding some water ,属于介词)
--He felt no fear,for he was very brave.他很勇敢,毫不畏惧.(for 后面是句子 he was very brave,属于连词)
* but
--We're all here but him.除了他我们都来了.(but 后是代词 him,属于介词)
--They would have resisted but that they lacked courage.如果不是缺乏勇气她们会抵抗的.(but 后是句子 that they lacked courage.,属于连词)
* before
--He sat just before me.他就坐在我的前面.(before 后是代词 me,属于介词)
--I must finish this letter before I go home.我必须在回家以前写完这封信.(before 后是句子 I go home,属于连词)
4、“介词 + 介词宾语”称作介词短语,介词短语可以用作名词的后置定语(形容词性),也可以用作目的、原因、条件、时间、地点、评注性等状语,作状语的时候就是副词性.for example 常用作评注性状语,因此是副词性.
好了吗