I'm not really a freeride guy, I have never done any 6" drops for example, so I guess, i will not dare to try any real "Shore" trails, but rather, single tracks stuff.
Vancouver is not all about 6 foot drops. In fact you can do a whole lot of Shore riding without ever getting air. What makes the shore difficult is roots + rain + steep. Depending on your confidence level / riding ability, try out Burnaby Mountain (SFU) for intermediate difficulty rides, or Seymour for the easier Shore trails. If you like it and want more, make a trip to Fromme and tick off a couple of the easier trails there.
There are some maps available at the local bike shops (Cove productions) which will help you out.
What kind of stuff do you ride where you're from (what french speaking country are you visiting from?), that could give us an idea as to where to suggest.
Cheers, hope you have a good trip here.