there ara some trees. 变为否定句

there ara some trees. 变为否定句

there ara some trees/那儿一棵树也没有（原句复数形式）
可以这样改：
单数形式：
There is no tree
There isn`t any tree
复数形式：
There are no trees
There aren`t any trees

There aren't any tree.

there are not some trees.

There aren't any trees.
.
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