irregardless is not grammatically correct it is a double negative- the correct term is regardless
Why did you left is grammatically incorrect. It should be: Why did you leave? Why did she leave? Why did he leave? Why did they leave?
It would not be a complete sentence but, there is nothing inherently grammatically incorrect in the phrase "during the all period". What you have is a reference to a period of time called "the all". Just because nobody knows what "The All" is doesn't make this grammatically incorrect.
Absolutely. Why would you think it might be incorrect?
There's nothing grammatically incorrect about "you live in the forest."
Perhaps you are referring to WikiAnswers policy, not grammatical 'rules'.
It is grammatically incorrect to say sister and sister. You just say sisters.
"Off you go" is not grammatically incorrect.
It has no main clause.
Grammatically incorrect.
a-pples
Why did you left is grammatically incorrect. It should be: Why did you leave? Why did she leave? Why did he leave? Why did they leave?
yes actually it is :)
Greek mythology. And your question is grammatically incorrect.
That sentence is grammatically correct.
No, not usually, because normally it is grammatically incorrect.
A mathematically and grammatically incorrect sentence.
No. This is incorrect. We always say 'India has".