French language Q&A Forum

Qu'est-ce que le "en" remplace dans cette expression? "je n'en croyais pas mes yeux"

Good morning, 

How do I insert accents while doing a dictation exercise?

Why is there no de with this sentence? J'espère ne pas faire d'erreurs.

I took a quiz. I translated "They are calling their dog" as Ils appellent leur chien. However, the correct answer was: Ils s'appellent leur chien. How does one know when to use the reflexive?

I can follow that most of the text is in the (futur d'anticipation). 

However, I am wondering why the text switched to using  the infinitive (entendre), in the last sentence? and why not use the Gerondif -en entendant. like at the beginning of the fourth sentence. 

I can’t find anything in this lesson or links about third person plural verbs. It would be useful to have examples of this as well as the situation of il/ elle + inversion for verbs ending -ter (which is mentioned in a question below). Am I right in thinking the inverted forms are eg achètent-ils and achète-t-il?

Answer gives "Et si tu aimes l'histoire" Why not "Et si tu aime l'histoire" ?