【分词结构代替原因状语从句AsIwasanxioustopleasehim,iboughthimanicepresent=Beinganxioustopleasehim,Iboughthimanicepresent.Becausesomanypeoplewereabsent,Wedecidetoputthemeetingoff=Somanypeoplebeingabsent,We】

　　分词结构代替原因状语从句

　　AsIwasanxioustopleasehim,iboughthimanicepresent=Beinganxioustopleasehim,Iboughthimanicepresent.

　　Becausesomanypeoplewereabsent,Wedecidetoputthemeetingoff=Somanypeoplebeingabsent,Wedecidedtoputthemeetingoff.

　　这里为什么要用Beinganxious,beingabsent不直接用absenting

　　只有现在分词能代替原因状语从句?还是.看主动被动来决定是用现在分词还是过去分词...如果过去分词或者不定式可以做原因状语从句麻烦举几个例子