"by the way" is translated as "en passant" in French. The original form is "soit dit en passant" ('telling you by the way').
The French equivalent of the English phrase, to have, is: avoir.
"The fashion" is an English equivalent of the French phrase la mode. The pronunciation of the feminine singular phrase -- which also translates as "the fashion industry," "the trend" -- will be "la mud" in French.
"Wow!" is an English equivalent of the French phrase "oh-là -là ."Specifically, the French phrase is an exclamation of surprise. The pronunciation is "oh-lah-lah."
"Your hatred" is an English equivalent of the French phrase ta haine. The pronunciation of the feminine singular phrase will be "ta enn" in French.
"French-style" is a loose English equivalent of the French prepositional phrase à la française. The feminine singular prepositional phrase translates literally as "at the French (manner)," "in the French (style)" or "to the French (way)" according to English contexts. The pronunciation will be "a la fraw-sez" in Alsatian and Cevenol French.
"Three truffles" is an English equivalent of the French phrase trois truffes. The pronunciation of the masculine plural phrase will be "twah tryoof" in French.
"Bo zhest" is the way to pronounce the French phrase beau geste.
Avoir is a literal French equivalent of the English phrase "to have." The pronunciation of the present infinitive will be "a-vwar" in French.
"He is..." is an English equivalent of the incomplete French phrase Il est... . The phrase also translates literally as "It is..." in English. The pronunciation will be "ee-ley" in French.
"Only" is an English equivalent of the French phrase ne...que. The adverbial phrase translates literally as "not...that" in English. The pronunciation will be "nuh kuh" in French.
Mes clés is a French equivalent of the English phrase "my keys." The feminine plural phrase may be used literally or symbolically. The pronunciation will be "mey kley" in French.
Le fils is a French equivalent of the English phrase "the son." The masculine singular phrase also translates as "the boy" in English. The pronunciation will be luh fees" in French.