The boys on the piayground are my classmates.改为否定句
The boys on the piayground are my classmates.改为否定句
The childern are piaying on the piayground否定句
thoes boys and girls are my classmates 改为否定句
there are some students in the piayground.(改为否定句)
my books are on the bed怎么改为否定句
The boys play football on the playground.改为否定句
the boys are looking at the blackboard改为否定句.
There are over one hundred boys on the playground.(改为否定句)
the boys are making some lanterns改为否定句
There are three boys under the tree 改为否定句
There are some boys in the classroom 改为否定句
The boys are piaying games on the piayground.的问句啊,急需谢谢(对画线部分