Subjunctive Tense using de

Question

I have noticed that some sentences in the subjunctive don't just have "que" but also "de".

"Estoy seguro de que los huevos están podridos."

How do I know when to use de?

Estar seguro de algo. So for this expression, you need the preposition de, which is very often left out by native speakers. - francobollo, Dec 1, 2012

Answer 1

You also have the option to place it after "después" and "antes" and before "que"

Antes (de) que lleguen, tenemos que limpiar la casa.

Después (de) que salgan, vamos a cenar.

I'm told the de is optional and can be left out. I personally like to keep it in there as it sounds a little more fluid.

I agree with you. It's a lot easier (for me) to pronounce when I use "de". - francobollo, Dec 1, 2012

Answer 2

This has nothing to do with the subjunctive. Sometimes it's ' que' and sometimes it's ' de que' , one just has to learn. Unfortunately I have no rule for this so I would use:

Seguramente, los huevos estén podridos . Seguramente is normally followed by the subjunctive. I think I'm correct in this statement, even though I stand to be shot at.

estén podridos is used when you are making a hypothesis. están podridos is used when you are 100% certain they are rotten. - francobollo, Dec 1, 2012

Thank you. I think, your highness, that if you're at all worried about eggs, jut assume the worst.. - annierats, Dec 1, 2012