Or perhaps someone will casually glance through your credit card purchases or cell phone bills to find out your shopping preferences or calling habits. (08.6 Passage 2)
分析主干:someone will glance...
本句是個簡單句,謂語動詞glance 后接介詞短語through purchases or bills。不定式短語to find out...在句中作狀語,表示“無意中一瞥”的結(jié)果。