Hi Licorice,
My DD had only 20 words when she turned 2 and even as she added words she mispronounced certain sounds etc. She did receive speech therapy and quickly progressed - whether due to the therapy or simple development I am not sure. She stopped speech at 3 1/2 but recently (she is now 7) she is spelling phonetically and still has some sounds wrong - she will spell (and say) finking for thinking or brudder for brother. She starts speech again this week to help her with her writing/speech.
I was worried when she was young that she may have more issues but her receptive speech and ability to communicate non-verbally were really great.
How great that your son is growing up tri-lingual! In the long run I think this will be a big advantage.
