be sure of　隐藏摘要 
坚信，确信
be sure of坚信，确信
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确信
确信 be sure of
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对某件事情名词做宾语
are you sure sure 肯定
be sure of（对某件事情名词做宾语）
be sure to do（对某件事情动词有把握）
http://www.rr365.com/english/200611/english_8816.html - 基于7个网页
深信；确信
145. be sure 肯定；确信
146. be sure of 深信；确信
147. be sure that 确信
http://www.ilib.cn/a-nmgnydxxb-shkxb200302003.html - 基于6个网页
  相关词条
a. be sure of  
to be sure of  
be sure of sth  
be sure of foot