It seems to me that 'speaking' a Language is in the moment, in a context and in a relationship. These moments can't be scripted. So to feel like you can share your thoughts in the beautiful variety of situations that life offers, you have to be able to be spontaneous in constructing that language. 
But spontaneity doesn't just happen. It needs memorising time, then workshopping time, then opportunity for unscripted use.
This podcast describes the activity I ran in my class yesterday where students created their own 'crazy words'.
Let me know what you think. How do you help students develop active use?
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