there are句型怎么造句？

用there are造句10个：1、There are bargains if you have the patience to sift through the dross.如果你有耐心细心查看一下那些废物的话，便宜货还是有的。2、Witches are real if and only if there are criteria for identifying witches.只有在有标准确认什么是女巫的条件下，女巫才是真实存在的...