同位语或插入语的使用
1. AS iS distinct from above，the number“13”.along-held symbol of ominous.ness in the eyes of most westerners，seems tO be plaguing them.
2. By contrast，when removed from the greenhouse，the protective umbrella，it struggles helplessly against the sudden attack of storms，only tO wither away.
3.Specifically，the number…6’，as they strongly believe，is closely associated with smoothness in the Chinese culture.
同位语或插入语一般插在主谓语之间，一般由名词词组(如例l、2)、介词词组(如in my opinion，in other words等)、从句(如例3)、不定式短语、现在分词短语充当。它们能起到补充说明的作用。除此之外，插入语还可对整句话表示解释，如：
4.There were twenty people present，to be precise.(不定式短语做插入语)
5. Roughly speaking，these countries are the most densely—populated in Asia.(现在分词短语做插入语)
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