1、There is a tree by the river.（改为否定句）

1、There is a tree by the river.（改为否定句）
There isn't any/a tree by the river
2、The clock is on the desk.（对 on the desk 提问）
Where is the clock?
3、Is it green?Is it white?（改为选择提问句）
Is it green or white?
4、Those are erasers.（改为单数句型）
That is an eraser.
5、Where does he come from?（写出同义句）
Where is he from?
6、It's a red car.（改为感叹句）
How red the car is!

1.There isn't a tree by the river.
2.Where is the clock?
3.Is it green or white?
4.That is an eraser.
5.Where is he from?
6.What a red car it is!

There isn't any trees by the river.
Where is the colck?
Is it green or white?
That is an eraser.
Where is he from?
It's such a red car!