mr black is in the playground now改为一般疑问句和否定句
问题描述：
mr black is in the playground now改为一般疑问句和否定句
答
is mr black in the playground now
mr black isnot in the playground now
答
Is Mr Black in the playground now?
Mr Black isn't in the playground now.
答
mr black is not in the playground now
is mr black is in the playground now?
你有没有单词打错啊?
答
Is Mr Black in the playground now?
Mr Black is not in the playground now.
答
一般疑问：Is Mr Black in the playground now?
否定句：Mr Black isn't in the playground now
答
Is mr black in the playground now？
mr black is not in the playground now
答
Is Mr. Black on the playground now?
Mr Black isn't on the playground now.
望采纳~