反义疑问句：There used to be a lot of trees here,____there?为什么可以用weren't?

There used to be.的反义疑问句是怎么样的? there be加used to 的反义疑问句是什么 There used to be some cities wall.的反义疑问句 there used to be an old ciname here,()/()()?反义疑问句 used to 的反义疑问句 I used to play soccer 反义疑问句 There used to be a bookstore near here.（改为反义疑问句） There used to be a small inn in the village,____ _____(反义疑问句） there used to be (a park),反义疑问句,…………是didn't it 还是 there used to反意疑问句There used to be a lot of trees.变反义疑问句有没有 used not there的或者是usen’t的?或者did not there? 反义疑问句：There used to be a lot of trees here,____there?为什么可以用weren't? used to句型做反义疑问句怎么做? she used to live in Beijing.改为反义疑问句 She used to have curly hair.反义疑问句 反义疑问句Tom used to live in paris,____ ____? Lana used to be quiet,的反义疑问句是什么? there used to be a tall tree in front of our classroom,_____?改为反义疑问句是wasn't there 还是didn't there? 英语语法问题,used to在句中充当什么成分句子“There used to be a tree here.USED TO充当什么成分?变反义疑问句时是按照THERE BE句型么?可以举例句说明么?