Learn Arabic (Modern Standard): أين الزميل؟

In Arabic, there is no direct equivalent for the present tense verbs "is" or "are". To ask "Where is the colleague?", you simply put the question word أين (where) right before the noun الزميل (the colleague).

How exactly is الزميل pronounced? Do I pronounce the 'l' sound?

No, you don't pronounce the 'l' here. The letter ز is what Arabic calls a "sun letter." When a word starts with a sun letter, the 'l' sound in the prefix ال (the) blends into it. So, الزميل is pronounced "az-zamiil" rather than "al-zamiil".

If I wanted to ask about a female colleague, how would this sentence change?

You would change the noun to its feminine form by adding the feminine ending ـة (taa marbuuTa) to the end of the word. The question becomes أين الزميلة؟ (Where is the female colleague?). The question word أين stays exactly the same.

Does the word order change if I want to answer this question?

Yes! While the question word أين goes at the beginning of the question, a statement usually starts with the noun. If you wanted to say "The colleague is here", you would say الزميل هنا (literally: the colleague here).