French language Q&A Forum

I'm reading an example using merci de with an action already done. It says to use Merci de + [Infinitif Passé] and gives the following example:

C'était très difficile, merci de m'avoir aidée.

Please, can you explain why aidée is feminine?

Bonjour Madame,

I asked this doubt a day ago but was unable to understand the reason behind it. The link is -

https://french.kwiziq.com/questions/view/a-small-french-correction

Please provide further illumination.

Bonne journée !

When you write: 

In this case, tous is always pronounced [toos], to differentiate it from tout (everything)!

--do you mean in both of the following cases?

1. as pronouns to replace a pre-mentioned noun

2. as compliments to an existing plural subject

?

Merci!