how often he visited his parents 这句话语法有错吗

how often he visited his parents 这句话语法有错吗 How often your parents go shopping这句话有语法问题吗 请问,“how often are you online”这句话有错吗 He is often white shirt 这句话有错吗 He often helps people on his work?这句话哪有错 How often does he do his homework?这句话错了吗,错在哪里? He play every day.这句话语法有错吗 he is nothing for me. 这句话语法有错么 这句话语法方面有错吗? 这句话语法有错吗?怎么改 He visited his parents at the weekend改同义句 He has died since two years ago.这句话语法有错吗?