peter can see an aeroplane in the sky 改为否定句
问题描述：
peter can see an aeroplane in the sky 改为否定句
答
Peter cannot see an aeroplane in the sky.
Peter can't see an aeroplane in the sky.
答
Peter can not see an aeroplane in the sky,
答
peter can”t see an aeroplane in the sky 只是试试哈