Keep it in a good condition. vs Keep it in good condition.

English as a Second Language English Vocabulary, Grammar and Idioms
1

i thought i heard someone says “keep it in a good condition”, but when i wrote it in my paper, i got crossed off the ‘‘a’’. i would love to know why, so i won’t make similar mistakes again.

2

Hi,
Here “condition” means the STATE that smth is in,specially how good or bad it is.Although it is singular/uncountable,using “a” is not wrong.Surprise!
The house is in excellent condition.
My car is in a terrible condition.
Regards,
Morteza

3

i don’t get it. so when should i use “a” ?

4

wait, so ‘keep it in a good condition’ is right too?

5

Hi,
YES.

6

Hi there.

I couldn’t agree more. morteza is right. thanks for being helpful. I hope this comment had been helpful in answering your questions.