Update preparation-skype-2019-04/page.en.md

preparation-skype-2019-04/page.en.md

@@ -74,7 +74,7 @@ Ideas : there will be contributors whose institutes are not (or not yet) partner
 
 ##### How to convince a professor to participate ?
 Ideas : 
-1. when someone is desired in the team, but is hesitating : give him/her full access to the collaborative tool of courses creation : seeing the course that is being built can encourage him to participate (in France we proverb: "the appetite comes with eating"). 
+1. when someone is desired in the team, but is hesitating : give him/her full access to the collaborative tool of courses creation : seeing the course that is being built can encourage him to participate (in France we have a proverb: "the appetite comes with eating"). 
 2. The collaborative tool to create the courses is very easy to use. As easy as to create a course with a word processing software like word or openoffice. It will be possible to work off-line at home. There will be much more possibilities than in a word processing software, and all pedagogical content create by the teams in the project will be usable.  
 3. the site (smartphone-compatible) will be a wonderful tool at the service of his students, and at the service of himself, whether for a course in front of the students (very good compatibility for a video projection), for a restructuring course (to answer students questions) or guide students towards pre-requisites.