Monta Tervedhis, ie tahlen elleama vel selen silen loestel!
This will be an attempt at explaining the only language from my book that I have taken time to develop, Seanil Elvish. For those of you who don't know, I am working on a fantasy novel, you can read an excerpt here
viewtopic.php?f=117&t=3311. The elves don't fully enter the books until the third, if all goes as planned, so I have quite a long time to work on developing the language and my technique for describing it, both of which are in their most incipient forms. There are three different areas of the language that I am going to talk about today, the vocabulary, the grammar, and the alphabet.
I am basing the vocabulary off of three languages that I am blending together, chosen because the first word I ever "translated" to Elvish was the word hope, and I chose the three coolest-sounding languages (for that word). They are Finnish, Norwegian, and Croatian. You may be thinking "WHAT?!?!?! Scandinavian languages for elvish?" yeah, that's what most people think, but it sounds pretty cool. Attached at the bottom of this page is my running alphabet (always subject to change) so take a look and let me know what you think!
The grammar structure is the hardest for me to describe, mainly because I can never get the parts of the sentences straight (I have the basics, but not enough to describe a whole new language), so what I am going to do is write out the sentence for each grammar structure that I have developed so far in Elvish, and then write the literal English translation of that sentence.
Past tense: Arvel teava (tee-AY-vuh) meien (my-EN) mavenel Ovar
English: Killed (past tense version of verb) you I could have.
Present tense: Monta Tervedhis, ie (eye) tahlen elleama (el-ee-AY-muh) vel selen silen loestel (low-STEHL)! (Correct version, all previous greeting lines dropped the word shine...

)
English: Many greetings, the Star (of) Life on our meeting shine!
Future tense: Alantíl (ah-lahn-TEEL) meien eidír (eye-DEER) Essíl
English: Surrender I never will
As far as the alphabet goes, I invented that in a brief spell of boredom (which I hope I am not giving to you), so it is entirely made out of the whims of my will... Let me know what you think, and what I need to improve. A pronunciation guide for the elvish alphabet is underway, but I am having trouble writing it (it's finals week... 'nuff said).