You___TV last night since there was a power--cut.A.mustn't have watched B.couldn't have watchedC.couldn't watch D. wouldn't watch 答案选B,为什么呢?求详解,并是否能帮助我翻译一下呢?谢谢大家!
来源：学生作业帮助网 编辑：六六作业网 时间：2024/05/12 11:58:22
You___TV last night since there was a power--cut.A.mustn't have watched B.couldn't have watchedC.couldn't watch D. wouldn't watch 答案选B,为什么呢?求详解,并是否能帮助我翻译一下呢?谢谢大家!
You___TV last night since there was a power--cut.A.mustn't have watched B.couldn't have watched
C.couldn't watch D. wouldn't watch 答案选B,为什么呢?求详解,并是否能帮助我翻译一下呢?谢谢大家!
You___TV last night since there was a power--cut.A.mustn't have watched B.couldn't have watchedC.couldn't watch D. wouldn't watch 答案选B,为什么呢?求详解,并是否能帮助我翻译一下呢?谢谢大家!
B
昨晚你不可能看电视了,因为停电了.
对过去的推测,应该是“情态动词+have done sth.”,先排除CD.
对过去肯定的推测,用must have done sth.,如：
The ground is wet.It must have rained last night.
地面是湿的,昨晚肯定下雨了.
而否定的推测用can't have done sth.,表示“不会”,如题所示.
can't 不可能（表示推测），对现在动作的表示不可能
couldn't have done 是表示对过去动作的不可能
句意：你昨晚（）看电视了，因为昨晚断电了。
因为断电了，所以你昨晚不可能看电视了，根据上述说法应该用couldn't have done 即B
选couldn’t watch 昨晚你们没能看电视，因为停电了。would是愿意的意思，与句子意思不符合
答案是B.
mustn't ---强调的是不可以，不许。
而couldn't 意思是不可能，故最适合这个语境。
翻译：昨晚断电所以你不可能看电视。