i have a class否定句是什么啊?突然想不起来了?应该是什么啊?是haven't还是don't have啊?

i have a class否定句是什么啊?突然想不起来了?应该是什么啊?是haven't还是don't have啊? you know that I have a few friends in the class 换成 否定句怎么改 I have a pen 变否定句 I have a ball.变为否定句 I have a good idea.(否定句) I have a bike.(改为否定句) I have a basball.改为否定句 I have a big 否定句 I have a stamp.否定句 I have a soccer 改成否定句 I ( )( ) a soccer I have some new friends in my class .(改为否定句) i have a good time for class同义句 I have a watch,a scarf and sunglasses(否定句) I have a watch,a scarf and sunglasses.(否定句) It's time for class.(改为否定句)It‘s time for class.(改为否定句)It's time()()class.正确答案是,It's time（to）（have）class.请讲下（to）（have）的语法是什么 They have a class meeting on Monday否定句和一般疑问句 You know that I have a few friends.改为否定句 You know that I ______ ______ friends in the class.如题 You know that I have a few friends.改为否定句You know that I ______ ______ friends in the class.The old man gave the poor boy some help. 请问I have a pen.的否定句是什么?A.I don't have a pen.B.I haven't a pen.请说明理由.