初一英语There be 句型 肯定句回答一个 特殊疑问句 一般疑问句 否定句回答一个 问句 造句每个1个

比如说肯定句：there is an apple on the table否定句：there isn't an apple on the table.一般疑问句:Is there an apple on the table?回答:yes,there is./ No,there isn't特殊疑问句：what is there on the table...