The verb should be in the subjunctive mood: "If I were you." However, use of the subjunctive is waning fast, and even careful speakers will occasionally get this wrong.
Sheila and I is the correct grammatical usage in a sentence.
grammatical error
To use "grammatical" in a sentence, you could say: "She always makes sure her sentences are grammatically correct." This showcases the use of the word "grammatical" in the context of proper sentence structure.
No, You can say: I taught the children correct grammatical tense. or The learned scholar volunteered to tech the children correct grammatical tense
Yes, it is, in all grammatical ways a sentence.
When a book is good, I get lost. It was this sentence grammatical corrected.
No, because we do not end a sentence with the word 'at'. Simple asking "Where is she?" conveys the same inquiry, and 'at' is unnecessary.
No, but they can help when the grammar is incomplete or not strictly correct. For example, the correct grammatical interrogative form is "Are you going out?" But you can convey the same meaning if you say "You are going out" with your tone rising at the end of the sentence.
Yes, the sentence "The hawker is selling drinks at the roadside" is grammatically correct. It is a simple sentence that is clear and follows proper grammatical structure.
No, there are no grammatical errors in the sentence you provided. It is grammatically correct.
It is important to note that there is a grammatical error in your sentence. It should read: "It is important to note that I."
"My beautiful cousins" is indeed a perfectly grammatical phrase. It is, of course, not a complete sentence.