7．Could you tell me      a moment ago？（　�。�
A．what were they talking aboutB．what are they talking about
C．what they were talking aboutD．what they are talking about

分析 你能告訴我剛才他們?cè)谟懻撌裁磫幔?/p>

解答 本題要填的是賓語(yǔ)從句，賓語(yǔ)從句中應(yīng)該用陳述語(yǔ)序，
即應(yīng)為引導(dǎo)詞what+主語(yǔ)+謂語(yǔ)，從而排除A、B；
根據(jù)a moment ago，知從句動(dòng)作發(fā)生在過(guò)去，應(yīng)用一般過(guò)去時(shí)．
故選：C．

點(diǎn)評(píng) 本題考查賓語(yǔ)從句的語(yǔ)序和時(shí)態(tài)．賓語(yǔ)從句通常是陳述語(yǔ)序，引導(dǎo)詞what+主語(yǔ)+謂語(yǔ)，賓語(yǔ)從句時(shí)態(tài)原則：主現(xiàn)從隨便，主過(guò)從必過(guò)，真理規(guī)律永一現(xiàn)．

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