Question

________ the morning train, he would not have been late for the meeting.

A．Did he catch

B．should be catch

C．has he caught

D．Had he caught

Answer 1

D

試題分析：句意：如果他趕上了早班火車，開會(huì)就不會(huì)遲到了。主句的謂語(yǔ)動(dòng)詞是would not have been ，說明與過去事實(shí)相反，從句則可以用if he had caught the morning train, 當(dāng)if從句中有were、had或者should 時(shí)，在可以省略if，把were、had或者should放在句首構(gòu)成倒裝句形式。本句中含有had，所以不用if時(shí)，就變成了 Had he caught the morning train。所以選D。