We all know laws to discourage the use of plastic bags _______ in many parts of
题型：不详难度：来源：
We all know laws to discourage the use of plastic bags _______ in many parts of the world.| A．passed | B．have passed | C．had been passed | D．have been passed |
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答案
| D |
解析
| 考查动词的时态。句意为“我们都知道不提倡使用塑料袋规定已经在世界许多地方通过”。主语为laws，用被动是一定的。根据语境可知用had been passed明显错误，只有D可以理解。此处用were passed也可。完成时态与过去时态的理解和辨析一直是高考重点，同时也是学生的难点。 |
举一反三
Then over dinner,Franklin mentions that he well since he gave up smoking and Dr Candy,the local doctor,offers to write him a prescription for some medicine.| A．had not been sleeping | B．has not been sleeping | | C．is not sleeping | D．was not sleeping |
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They each other for 5 years.| A．have been in love with | B．have fallen in love with | | C．are in love with | D．fell in love with |
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—I wonder what has become of your company?
— about it?It is as good as ruined because of bad management.| A．Don’t you hear | B．Haven’t you heard | | C．Didn’t you hear | D．Hadn’t you heard |
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It’s been over a year since I back from the countryside.| A．was coming | B．had come | C．will come | D．came |
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It’s time that you home and I’d rather you again tomorrow.| A．are going;will come | B．go;are coming | | C．went;came | D．would go;would come |
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