Excellent responses rahim! I would only add some things about "watch." We watch the fireworks. Watch that man (what is he doing?)! We watch TV. But, just like in Spanish (which I am studying), some words can have many meanings (why did they do that to us?) "Watch" can be one of those tricky words with many meanings: Watch out! (be careful), Watch your back! (someone may be trying to harm you), Watch for an opening in traffic (is it safe for me to try an cross the road?). Cheers!

I'm a native speaker, and Rahim got it right for the most part. Just something I would add for watch, it usually implies that you're looking at something carefully for a period of time, so it's not just a quick glance.

I'm not native speaker but I know about that and I think my answers are tru

Look : To look at something for a reason, with an intention . Example : look at that strange man.// See: To see something that comes into our sight that we weren't looking for . Example : Did you see that bird? I wasn’t looking for it, it just appeared// Watch : To look at something carefully, usually at something which is moving. Example: the TV doesn’t move, but you watch the moving images carefully