1、肯定
...be suitable for 适合于be sure of 肯定......be tied by/with被……捆绑 ...
2、坚信
...be suited t0适合于be sure of坚信，确信be sure to(do)一定，必定 ...
3、确保
...2. turn out 原来是；结果发现；3. be sure of 一定的；必定的；无疑的；确保的；4. pay attention to 关心；注意； ...
be not sure of由于对客观情况不够了解而不能作出恰当的判断
be sure of oneself有自信心;自信;有自信;有自决议信念
to be sure of肯定
be sure that of确信
be sure of themselves自信
be sure of victory一定获胜
be sure of success有必胜的把握;稳操胜券;对成功有把握
Be sure of you认定尓了
be sure of yourself自信