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There be有特点，主语放在be后面，
单数主语用is ，复数主语要用are。
变否定很简单，be后要把not添。
变疑问也不难，把be提到there前。
否定疑问any换，就近原则多多练。
教室里有很多桌子和凳子。
There are some desks and chairs in the classroom书架上有很多书。
There are some books on the shelf.椅子下有个足球。
There is a football under the chair.树上有两个风筝和一只鸟。
There are two kites and a bird on the tree. There is a bird and two kites on the tree.房子附近有三棵树。
There are three trees near the house.
1. There is a mouse in the room.
(改写为一般疑问句，并作肯定否定回答) Is there a mouse in the room? Yes, there is. / No, there is not.
2. There is a fish in the bowl.(改写成否定句)
There is not a fish in the bowl.
3. There are some dolphins in the ocean.
(改写为一般疑问句)
Are there any dolphins in the ocean?
4. There are some books in his bag. (改写为否定句 There are not any books in his bag.
