It is required in the regulations that you should not tell other people the password of your e-mail account
句子语法结构分析
形式主语:It (它)
谓语：is required (被要求)
状语: in the regulations (在这些规章制度（之中)
真正主语: that you should not tell other people the password of your e-mail account
(你不应该将你的电子邮件帐号的密码告诉其他人)
中文意思:在这些规章制度之中,要求你不应该将你的电子邮件帐号的密码告诉其他人.