树上没有鸟There are not birds in the tree.还是There aren't any bird

树上没有鸟There are not birds in the tree.还是There aren't any bird Are there any birds in the tree?为什么不能写为Is there any bird in there aren't any birds in the tree.(用一般过去时改写句子) any,birds,there,in,tree,the,aren't用这几个单词怎么组成句子? There aren’t any birds in the tree.改同义句 there are any birds in the tree哪错里了 Are there any birds in the tree?改肯定句 are there any birds in the tree?作否定回答 are there any birds in the tree 改为否定句 There are six birds in the tree There aren't any children in the room ,are they? There aren't any pens in the bag,______?A.are there B.aren't