13) -Shall I tell John about it ﹖
-No, you _____. I've told him already. (NMET'94)
A. needn't B. wouldn't C. mustn't D. shouldn't
情态动词shall在试题中表示征询对方意见或请求指示。答句暗示 没有必要了,故本题选A
虚拟语气
最自然的虚拟状态:由should/would+原型时态(不含时间只含状态)
本质上是过去将来时:即,时间固定在过去将来,状态不同:一般、进行、完成、完成进行。
这时虚拟语气的产生往往是因为我们要表达本来应该(而现在却还没有)
(本来可以,本来能)
I should go! ( but I'm still here!) (一般)
I should be working now! (进行)
I should have practiced more (than I did)! (完成)
我应该多多练习!(言下之意,现在我练习得不多。)
I shouldn't dream away my time too much! (完成的否定)
(actually I did dream away my time too much!)
It shouldn't have been leaking for such a long time! (完成进行)
I may/might/could have finished! (完成)
一些常见的句型中,就会出现这种虚拟语气,而处于从句之中,should 常常被省略掉
o suggest, advise, propose, recommend, plan;
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