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精英家教網(wǎng) > 高中英語(yǔ) > 題目詳情

2．David _____ a customer when the fire started．（　　）

A．

served

B．

was serving

C．

had served

D．

would serve

分析大火開始的時(shí)候David正在為一位顧客服務(wù)．

解答答案是B
根據(jù)從句的時(shí)態(tài)可得知主句要用過去的某種時(shí)態(tài)，但從句意分析，"大火開始"這個(gè)動(dòng)作發(fā)生時(shí)，"David為顧客服務(wù)"這個(gè)動(dòng)作正在進(jìn)行，所以要用過去進(jìn)行時(shí)，故答案選B．

點(diǎn)評(píng) 本題考查句子的時(shí)態(tài)，首先根據(jù)時(shí)間狀語(yǔ)確定句子的基本時(shí)態(tài)，然后分析主句和從句之間的關(guān)系，確定題目的最佳答案．

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