一般疑问句变成否定句后,动词是否还是ing形式 例如：My sister is swimming in the river改否定句是?
问题描述：
一般疑问句变成否定句后,动词是否还是ing形式 例如：My sister is swimming in the river改否定句是?
答
是的.My sister is not swimming in the river.