| A | B |
| Estoy convencido de que... | I'm convinced that... |
| Estoy seguro de que... | I'm positive that... |
| Es evidente que.... | It's evident that... |
| Dudo que estés bien informado sobre... | I doubt that you're well informed about... |
| Dudo que sepas... | I doubt that you know... |
| Parece mentira que haya... | It's hard to believe that there is/are... |
| Parece mentira que digan... | It's hard to believe that they say... |
| No creo que los periodistas sean... | I don't think that journalists are... |
| No creo que los noticieros sean... | I don't think that newscasts are... |
| No estoy seguro/a de que tengas razón sobre... | I'm not sure that you're right about... |