题目内容
9．She ______ have attended that meeting，for she was doing paperwork in the office then．（ ）| A． | shouldn't | B． | mustn't | C． | wouldn't | D． | couldn't |
分析 她不可能去参加那次会议，因为当时她正在办公室做文案．
解答 答案：D 根据后一句"for she was doing paperwork in the office then．因为当时她正在办公室里做文案．"可以推测出：含空白处的句子表达的应该是她不可能去参加那次会议．所以本题考查的应该是情态动词表示推测的用法．当情态动词表示否定的推测时couldn't 语气最强，指"不可能"，带有惊异、怀疑的感情色彩；shouldn't不应该，想必不会； wouldn't表示可能不是这样的，很不肯定，属于很随意的主观判断；must可以用来表示推测，"一定是"，但是它的否定形式mustn't禁止，不能用于推测；故选D
点评 本题考查的是情态动词表示推测的用法．很多情态动词都可以表示推测，要注意总结它们之间的区别．
练习册系列答案
相关题目
6． more effectively with others，more and more people equip themselves with a higher education．（ ）
| A． | To compete | B． | Being competed | C． | Competing | D． | Competed |
20．-Why you didn't handed in your exercise paper？
-Sorry，but I ____ that it should be turned in today．（ ）
-Sorry，but I ____ that it should be turned in today．（ ）
| A． | didn't know | B． | hadn't known | C． | haven't known | D． | don't know |
17．You'd better stop smoking，_______ your health will break down．（ ）
| A． | and | B． | but | C． | or | D． | yet |
4．Had Li Na not experienced pains in the tennis court for so many years，she____ one of the most famous sports star in China now．（ ）
| A． | has not been | B． | wouldn't have been | ||
| C． | would not be | D． | had not been |
2．--There'ssomeone knocking on the door．Who _____it be？
-It must be Mary．She promised to be here at 8：00．（ ）
-It must be Mary．She promised to be here at 8：00．（ ）
| A． | must | B． | need | C． | shall | D． | can |