My baseball is under the table.（对under the table
问题描述：
My baseball is under the table.（对under the table
提问）
My math book is on the desk.(改为一般疑问句)
They are some good dictionaries.（改为单数句）
Under the bed is a red ruler.（改为同义句）
答
My baseball is under the table.（对under the table 提问）
under the table是地点 -->Where is your basketball?
你的篮球在哪儿?
My math book is on the desk.(改为一般疑问句)
助动词提前-->Is your math book on the desk?
你的数学书[是不是]在桌面上?
They are some good dictionaries.（改为单数句）
it is a good dictionary. 这是一本好的词典.
Under the bed is a red ruler.（改为同义句）
a red ruler is under the bed.倒装句顺过来变成主谓顺序.
有一把红色的尺子在床底下.