11．Do you know when basketball     ？（　�。�
A．is inventedB．was inventedC．has inventedD．had invented

分析 你知道籃球是什么時(shí)候發(fā)明的嗎？

解答 答案：B．
首先根據(jù)語(yǔ)境推測(cè)句意是"你知道籃球是什么時(shí)候發(fā)明的嗎？"，由于句子表述的是發(fā)生在過(guò)去的事情，判斷句子中的謂語(yǔ)動(dòng)詞用一般過(guò)去時(shí)，主語(yǔ)  basketball 是動(dòng)作invent 的承受者，所以用被動(dòng)語(yǔ)態(tài)，一般過(guò)去時(shí)被動(dòng)語(yǔ)態(tài)的構(gòu)成是：主語(yǔ)+was/were+動(dòng)詞的過(guò)去分詞，故選B．

點(diǎn)評(píng) 本題考查時(shí)態(tài)和語(yǔ)態(tài)．每個(gè)時(shí)態(tài)都有標(biāo)志詞，熟記這些標(biāo)志詞是做題的關(guān)鍵．在沒有時(shí)間狀語(yǔ)的情況下可以根據(jù)語(yǔ)境來(lái)對(duì)時(shí)態(tài)做出判斷．判斷語(yǔ)態(tài)的關(guān)鍵則是觀察主語(yǔ)是謂語(yǔ)動(dòng)詞的執(zhí)行者還是承受者．

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