19．A lot of tents，drinking water and food __________ to the homeless earthquake survivors in the past several weeks．（　�。�
A．are sentB．were sentC．have been sentD．had been sent

分析 在過去的幾周里，大量的帳篷，飲用水和食物已經(jīng)被送給了那些在地震中無家可歸的幸存者．

解答 答案：C．根據(jù)主語A lot of tents，drinking water and food 和謂語動(dòng)詞send的含義可以看出它們之間是被動(dòng)關(guān)系，又根據(jù)時(shí)間狀語 in the past several weeks可以知道應(yīng)該用現(xiàn)在完成時(shí)態(tài)，所以選擇C．

點(diǎn)評(píng) 考查現(xiàn)在完成時(shí)被動(dòng)語態(tài)．
現(xiàn)在完成時(shí)被動(dòng)語態(tài)強(qiáng)調(diào)一個(gè)發(fā)生在過去的被動(dòng)性動(dòng)作，它有兩層意思：1）動(dòng)作已經(jīng)完成，強(qiáng)調(diào)對(duì)現(xiàn)在造成的影響或結(jié)果：2）主語與謂語動(dòng)詞之間為被動(dòng)關(guān)系．

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