19．Mr．Chapman retired at 70after he        nearly 40years with the Gas Company．（　�。�
A．had spentB．has spentC．spendsD．would spend

分析 在天然氣公司度過了將近40年之后，Chapman先生在70歲時(shí)退休了．

解答 答案：A
根據(jù)"Mr．Chapman retired at 70"使用了一般過去時(shí)可知，此處表示發(fā)生在過去Chapman先生退休之前的狀態(tài)，所以應(yīng)使用過去完成時(shí)；故選A．

點(diǎn)評(píng) 本題考查了過去完成時(shí)（had+done）的用法；首先應(yīng)根據(jù)句中已知的時(shí)態(tài)以及句意，判斷出此處動(dòng)作發(fā)生的時(shí)間；其次應(yīng)了解過去完成時(shí)表示的是發(fā)生在過去之前的動(dòng)作；最后應(yīng)熟練掌握各時(shí)態(tài)的意義及用法區(qū)別．

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