英语翻译

题目

英语翻译
A policeman approached Jimmy and told him he ought to have gone along a side street as Jumbo holding up traffic.
(Jumbo is a baby elephant)
3,have gone 为什么用过去现在完成时?ought to go along 应该的内容为什么不用一般时态?
as Jumbo holding up traffic.—更正→as Jubo was holding up

答案

A policeman approached Jimmy and told him he ought to have gone along a side street as Jumbo was holding up traffic.
问：1,句中as 如何理解,怎么翻译好?2,as这个介词用法,举例说明.3 ought to have gone
have gone 为什么用过去现在完成时?ought to go along 不可以吗?应该的内容为什么不用一般时态?
答：本题句出自新概念英语第二册第65课：
Last Christmas,the circus owner,Jimmy Gates,decided to take some presents to a children's hospital.Dressed up as Father Christmas and accompanied by a 'guard of honour' of six pretty girls,he set off down the main street of the city riding a baby elephant called Jumbo.He should have known that the police would never allow this sort of thing.A policeman approached Jimmy and told him he ought to have gone along a side street as Jumbo was holding up the traffic.
一个警察走过来告诉吉米,他应该走一条小路,因为江泊阻碍了交通.
1.as在这里表示原因.译作“因为”,“由于”.
2.as 在这里不是介词,是从属连词.用法很多.可从词典上摘抄.
3.ought to have gone ...不叫过去现在完成时（没有这种说法）.它相当于should have gone ...
是情态动词后用完成式,表示“本应该做某事”,是针对过去而言的.should +动词原形,表示现在或将来,如：You should study hard.你应该努力学习.（现在和将来）.如果你以前没有好好学习,这次没考好.我说：You should have studied hard.