feelsure后面加什么介词

后边加介词of，表示确信，例如：

1.A: Maybe she doesn't feel sure of herself. Or she probably feels lonely without you.A：也许她对自己没有信心，又或者没有你她会感到孤独。

2.It would be nice to feel sure of that.如果我们能就此感到放心，那真是太好了。

3.It seems to me there must be something outside, and I feel sure of it.我似乎觉得外面发生了一些事情&我有这种预感！