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The policeman declared that the blow must be made from behind.A、must have been m
The policeman declared that the blow must be made from behind.A、must have been m
游客
2025-01-30
23
管理
问题
The policeman declared that the blow
must be made
from behind.
选项
A、must have been made
B、would have been made
C、ought to have been made
D、should have been made
答案
A
解析
(1)画线部分错误分析。
本题主要考查情态动词must表示推测的用法。must表示推测,表示“(很可能或符合逻辑)一定”的用法有两种:对当前情况的肯定推测,用must+动词原形;对过去情况的肯定推测,用must have v.-ed。
e.g.You must be hungry after all that walking.(对当前情况的肯定推测)
走了这么远的路,你一定饿了吧。
I’m sorry, she’s not here.She must have left already.
抱歉,她不在这儿。准是走了。
(2)选项分析。
本题中主句的动词为过去式declared,因此从句中的动词也应为表示过去的情况,才能与主句的动词在时态上保持一致。因此,选项A正确。
【知识拓展】语法拓展:情态动词表示推测。
当情态动词指说话人的主观看法时,就是推测性用法。大致分为三类:
①表示“可能”,如might,may,could,can。
e.g.Pork is also the most versatile of meats.It can be roasted whole or in pieces.
在肉类中,猪肉的做法也最多,可以整块烤来吃,也可以切片烤来吃。
There is a range of programs on the market which may be described as design aids.
市场上有各种程序,可以称为设计辅助工具。
②表示“很有可能”,如should,ought to,would,will。
e.g.I should have finished the book by Friday.
到星期五我应该能读完那本书。
Ordinarily it would be fun to be taken to fabulous restaurants.
一般来说,跟别人去豪华餐馆吃饭会是件乐事。
③表示“肯定”,如must。
具体内容参见本题解析部分。
以上表示推测性用法的情态动词中,might表示可能性的程度最低,must表示可能性的程度最高。
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