In Capital letters^x, Uncountable nouns^x

Newguest wrote:HIHI ! IS IT REALLY A BIG MISTAKE TO PUT A COMMA AFTER "ALI?" It is a little mistake. WHY CAN'T WE SAY "A BAD LUCK" The word 'luck' is uncountable. You cannot use 'a' with an uncountable noun. You can say something such as 'a bit of bad luck' or 'some bad luck', however. I...

Thank you. I looked up the dictionary again after seeing your reply and found this: 5, DET You use no to mean not any or not one personor thing. He had no intention of paying the cash. And it has the word in big capital letters as a DETERMINER and my question is why a determiner in front of ...

Sir, Water is an important for our lives. As water is uncountable noun, we can't use a or an. so why 'AN' before important. Please explain it. Sun is a proper noun . As proper noun start with capital letter, but have noticed the sentences like The sun is shining. is this sentence...