问题描述：
tomorrow is my birthday.(对划线部分提问）
1.there are some trees in the plarground.(改为否定句)
4.there is only one computer in my class.(对划线部分提问）划线部分是only one
look at the blackboard.(改为否定句）
1.there are some trees in the plarground.(改为否定句)
4.there is only one computer in my class.(对划线部分提问）划线部分是only one
look at the blackboard.(改为否定句）
问题解答：
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