I could have been on time for the meeting,but I ____ in a traffic jam for over half an hour.A.have caught B.have been caught C.was caught D.caught这题的正确答案是C.这里为什么要用过去式不是用完成时?"for+一段时间"不是完

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Icouldhavebeenontimeforthemeeting,butI____inatrafficjamforoverhalfanhour.A.havecaughtB.havebeencaugh

I could have been on time for the meeting,but I ____ in a traffic jam for over half an hour.A.have caught B.have been caught C.was caught D.caught这题的正确答案是C.这里为什么要用过去式不是用完成时?"for+一段时间"不是完
I could have been on time for the meeting,but I ____ in a traffic jam for over half an hour.
A.have caught B.have been caught C.was caught D.caught这题的正确答案是C.这里为什么要用过去式不是用完成时?"for+一段时间"不是完成时的标志吗?

I could have been on time for the meeting,but I ____ in a traffic jam for over half an hour.A.have caught B.have been caught C.was caught D.caught这题的正确答案是C.这里为什么要用过去式不是用完成时?"for+一段时间"不是完
不要想太多,因为应该是过去时,所以就用过去时,这句话强调的是前面的,不用完成时,for+一段时间,不一定要用完成时,如果是单独的句子,for+一段时间是用完成时,而且一般是表示延续的状态.这里是catch,瞬间动词,不用完成.
懂了没?