| A | B |
| Claro que... | Of course... |
| Es cierto que... | It's true that... |
| Es evidente que... | It's evident that... |
| Es obvio que... | It's obvious that... |
| Estoy convencido(a) que... | I'm convinced that... |
| Estoy seguro(a) que... | I'm certain that... |
| No cabe la menor duda... | There is absolutely no doubt. |
| Por cierto. | Certainly. |
| Por supuesto. | Of course. |
| Sin duda alguna. | Without a doubt. |
| Todo el mundo sabe que... | Everyone knows that... |
| estar al tanto de | to be up to date on |
| estar bien informado(a) sobre | to be well-informed about |
| Me suena a chino | It's Greek to me |
| no saber ni jota de | to know absolutely nothing about |
| no tener la menor idea | not to have the slightest idea |
| ¿Qué sé yo? | How should I know? |
| Que yo sepa... | As far as I know... |
| ¡Ya lo sé! | I know! |