问题
选择题
“Is John coming by train?” “He should, but he _________ not. He likes driving his car.”
A．must
B．can
C．need
D．may
答案
答案：D
D。may 表推测，may not 意为“可能不(会坐火车来)”。句中的 He should 为 He should come by train 之省略，由于其后出现转折连词 but，说明语意有变化，再结合下文的 He likes driving his car，便可决定此题选D。注意，不能选B，因为can表示推测时通常不用肯定陈述句。