________ many times,I still didn't know how to operate the machine.
A.Having taughtB.Having been taughtC.Being taughtD.Teaching
B

試題分析:考查分詞做狀語(yǔ)。本句中的動(dòng)詞teach與句子主語(yǔ)I構(gòu)成被動(dòng)關(guān)系,可以使用過(guò)去分詞done表示被動(dòng)和已經(jīng)完成;過(guò)去分詞done="having" been done;后者強(qiáng)調(diào)的是已經(jīng)完成,前者強(qiáng)調(diào)的是被動(dòng)。教育:已經(jīng)被多次教育,我仍然不知道如何操作這部機(jī)器。故B正確。
點(diǎn)評(píng):當(dāng)分詞做狀語(yǔ)的時(shí)候,如果構(gòu)成分詞的動(dòng)詞與句子的主語(yǔ)構(gòu)成主動(dòng)關(guān)系,就使用現(xiàn)在分詞做狀語(yǔ);當(dāng)二者構(gòu)成被動(dòng)關(guān)系,使用過(guò)去分詞做狀語(yǔ)。如果分詞的動(dòng)作發(fā)生在謂語(yǔ)動(dòng)詞之前,就使用分詞的完成式。如果分詞與句子的主語(yǔ)沒(méi)有關(guān)系,可以使用狀語(yǔ)從句或者獨(dú)立主格結(jié)構(gòu)。
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