These 和 they 都可以指生物和死物的上网找到的句子：These are my parents and this one is my sister.这两位是我父母,这位是我姐姐.They are devoted to their children.\x09他们深爱着自己的孩子.There are 是 这...These are my parents./They are my parents是不是都行啊？they are 通常 比较常用these are 就会少但两个意思一样