She doesn't has a book. She doesn't have a book. Why is the first sentence wrong? We use 'has' with singular, and 'she' is singular. What are the differences in meaning between the following sentences?
All of the sentences below convey the meaning of compulsion of exercise to be carried out in three months. The question asked covers more ground than just have or has. I think op's example is just one example and the question asked is in order to know if who agrees with the verb when who is.
