there are some boats on the rive.改否定句
there are some boats on the rive.改否定句
there are some boats on the river改成否定句
there were some boats on the lake改为否定句
改为否定句:There are some boats in the river.
there are some apples on the tadle改否定句
There are some boats on the river.
There are some flowers in the park.改否定句
the rive,there are some old buildings?
There are some apples改否定句
there are some books on the table.(变为否定句
There are some birds on the tree.的否定句
There are some apples on the table 改为否定句