Sophia got an e-mail her credit card account number.
A. asking for
B. ask for
C. asked for
D. having asked for
网友回答
(答案→)A. asking for
B. ask for
C. asked for
D. having asked for
解析：根据句子结构可知，此处ask for是非谓语，与逻辑主语e-mail之间是主动关系，因此排除BC，D项意为已经干了某事，与句意不符，因此选择A项，意为，索菲亚收到了一封索要她的信用卡账户号码的电子邮件。
【考点定位】考察非谓语动词。