-Look at the man in the classroom!Is he Mr.White? -No,it___be him.He's eating in the dining hall.A can't 正确答案是选A但是C也是表推测啊,为什么不选C 求详解B mustn'tC may notD needn't
问题描述：
-Look at the man in the classroom!Is he Mr.White? -No,it___be him.He's eating in the dining hall.
A can't 正确答案是选A但是C也是表推测啊,为什么不选C 求详解
B mustn't
C may not
D needn't
答
A
can't表示推测时意思是“不可能”，may not表示“可能不”。
因为后面说：他正在餐厅吃饭，所以，应该是“不可能”。
答
A can't ------------不可能是，根据上下文的语气来判断
答
因为A表示：肯定不是.语气坚定.
C表示：也许不是.语气太弱.
He's eating in the dining hall.表明,眼前这个男人肯定不是怀特先生.所以选A
答
B 【 mustn't】 一定不是