请高手阐释此句中tobecaught充当的成分
如题.
YuhannaIbrahimandBoulosYaziji,whoarefromtwodifferentbranchesoftheOrthodoxChurch,arethemostseniorclericstobecaughtupdirectlyintheSyrianconflict.
YuhannaIbrahim和BoulosYaziji来自东正教堂的不同分支机构,他们是叙利亚冲突中直接被抓的最高牧师.
如果不用这个不定式tobecaught,那么可以将此句改成什么样?
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