18.Mr.Yang was reading his book in the office,completely            to the world.( 。
A.losingB.having lostC.lostD.to lose

分析 楊先生正在辦公室里看書(shū),完全迷失在書(shū)籍的世界里.

解答 答案:C 句中有逗號(hào)分隔,沒(méi)有連詞,要用非謂語(yǔ)動(dòng)詞;be lost to迷失在,沉浸在.故選C.

點(diǎn)評(píng) 過(guò)去分詞是非謂語(yǔ)動(dòng)詞的一種,用法很靈活,分為簡(jiǎn)單式done(表示與謂語(yǔ)同時(shí)或幾乎同時(shí)發(fā)生的動(dòng)作);完成式having been done(表示先于謂語(yǔ)的動(dòng)作).學(xué)習(xí)時(shí),要把握其用法特征:表示被動(dòng)和完成.同時(shí)還要注意區(qū)分現(xiàn)在分詞和不定式.

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