French language Q&A Forum

What happens when the indefinite article is followed by a preposition?

For example :

Le médecin travaille dans un hôpital.

The negative sentence according to the rule is ' Le médecin ne travaille pas dans d'hôpital ' . 

But d'hôpital sounds so absurd.

Is there any rule of negation when the the indefinite article is followed by a preposition?

Hi,

I was wondering when using être or avoir in the sentence below does it determine like it does when you use it in the idiomatic expressions? 

L'étudiant n'est pas en classe. Il Sera encore endormi. 

The student is not in class. He is probably still asleep

Cause I don't see the aura used here so I was wondering if it's similar when we learn about the idiomatic expressions. 

Thank you

Nicole

Nous ne nous sommes pas levés tôt.       Ils ne se sont pas brossé les dents .

Are these sentences correct?  Should the past participle still agree with the noun? Could you provide more examples please. Thanks in advance.

Surely a mixing bowl = 'un bol à mélanger' and 'un saladier' is just an editing error, copied over from the previous line?

second section sayes it cant be followed by a conjugated verb but it has been in first section when words being introduced, what am i missing?

Would "absent" work?