Press the button after the red light is on.改为否定句但句意不变

Press the button after the red light is on.改为否定句但句意不变 There is a light on the desk.【改为否定句】 There is a light on the desk.改为否定句 (改为否定句,但原意不变)The desk is smooth. there in a light on the desk.改为否定句 turn on the light怎么改为否定句 press the red button to be liked You must stop at the red light变成否定句 The baseball is on the sofa（改为否定句） The ruler is red.改为否定句,并有一个肯定回答和一个否定回答 The apple is red.改为同义句 英语改句：改句：1.The wind is blowing strongly.（否定句,但句意不变）__________