Whats the subject and whats the verb?
Here’s how to tell “what is what.” In sentence 1, “you” is the subject and “were teasing” is the verb because questions in English switch the places of the subject and the verb’s first part. If you make a sentence like “She is dancing the tango,” it’s easy to see that “she” is the subject and “is dancing” is the verb. When you change to a question, like “Is she dancing the tango?” the order is different, but the parts still have the same jobs to do. So, to figure out subject and verb, first change all questions back into statements. Now for number 2. If we follow the procedure of changing questions back to statements, we get “You found the CD’s yesterday.” So “you” is the subject. But what happened to the “did”? The verb “do” and all its forms (did, does, do) is really goofy and appears in questions and negatives. You might say that the correct answer for the verb is “did find” or you might say it’s “find” by itself, since the “did” is there only to show that it’s a question. If you ha