改为否定句 the boy has many pen pal

Johh has a pen pal 改为否定句 如何将 I think Mary has a pen pal .改为否定句 The boy has a pen.(改为否定句） 为什么是does not have,而不是hasn't? 如何变否定句 例如:John has a pen pal.My pen pal lives in shanghai. My pen pal lives in Zhengzhou.改为否定句 His new pen pal lives in Taiyuan改为否定句 The city has many big restaurants改为否定句 His pen pal lives is singapore.（改为否定句） I have a pen pal in j mike has many friends改为否定句 He has a dictionary.改为否定句 He___ ____a dictionary.The boy has she is writing a letter to her pen pal[改为否定句} She writes a letter to her pen pal onec a month.（改为否定句）