Tom,what are you doing?You ___ the incoming math exam.If you

Tom,what are you doing?You ___ the incoming math exam.If you fail,you won't go unpunished.
A.are supposed to prepare for
B.are supposed to be preparing for
答案说选A,为什么不能选B?
我觉得可以表示“你理应正在准备考试”.

缭绕的1973 1年前已收到1个回答举报

xdge8ebo 幼苗

共回答了19个问题采纳率：89.5% 举报

这是劝告, 指说话以后对方该如何做
如果象你这样理解就带责备意味了. 要说：
You are supposed to have been preparing.
类似于should + have + been doing “本应该在做.” 事实上没在做

【希望帮助到你,若有疑问,可以追问~~~
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1年前

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