12．Catherine was seated in the sofa，totally ________ the book about youth and love．（　�。�
A．absorbing inB．absorbed inC．absorbing onD．absorbed on

分析 Catherine坐在沙發(fā)上，完全專注于這本關(guān)于青春與愛的書中．

解答 答案是B．本題考查分詞做狀語；題干中的關(guān)鍵短語be absorbed in表示"專注于，全神貫注于"，故C和D介詞搭配錯誤；英語中很多類似的"be+過去分詞+to do/介詞/從句"的結(jié)構(gòu)往往表示邏輯主語的狀態(tài)，只需要去掉be動詞，用過去分詞短語做狀語、定語或補(bǔ)語，故本題用過去分詞短語作狀語，選B．

點(diǎn)評 首先判斷選項中的動詞在句中是以謂語還是非謂語形式出現(xiàn)，然后根據(jù)選項在句中的功能結(jié)合非謂語的基本用法做出合理的判斷．

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