Which "are" correct? 1. Third grade, and the third grade are both correct. However, it usually isn't correct to say "at the school". You could say "... at school", but It usually sounds most natural to just say, "I am in third grade." In the second sentence, "the third grade" and "third grade" are interchangeable. However, depending on usage, it might sound better to say, "to do this/that math question" or "to do math questions". 2. I have twice as much money as you do. or I have twice the money you do. 3. I might say: I've been doing drag for ten years. "Wearing drag" is not incorrect, but if you've been wearing the same drag for 10 years, it is probably dirty by now. 4. I went on a hunger strike. These are very interesting sentences. I hope these answers are helpful. Please feel free to ask more questions. Sometimes a sentence sounds correct in a different context. "We're all born naked and the rest is drag." -RuPaul

In general 'the' is used to refer to one example in particular - such as something you have already talked about, or discussed. In this case, you would use it if you want to specify that it is the third, not any other grade. In your case, either would be OK, BUT you haven't specified which school, so you don't want 'the' in front of school. 1: I am in third grade at school or I am in the third grade at school. are both OK. 2: It's correct English, but it doesn't really make sense. Usually you would say 'I have twice as much money as you'. 3: Either is OK. You have been wearing drag for ten years. You have been dressing in drag for ten years. 4: Again - either is OK.