Does she have a blue pen 改为否定句 我急

Does she have a blue pen 改为否定句 我急 Does she have a toy 改为否定句 Does he have a pen pal?改为同义句 The boy has a pen.(改为否定句） 为什么是does not have,而不是hasn't? My pen is blue.(改为否定句） .如何改为否定句she does a lot of housework. she does a lot of housework .如何改为否定句 She does not have a sister.改为肯定句 she wants to have a ruler 怎样改为否定句 She writes a letter to her pen pal onec a month.（改为否定句） I have a pen 变否定句 does she have a pen 和 does she has a pen那个对?