That is to say,the context of each word is collected,along with the word itself.

问题描述:

That is to say,the context of each word is collected,along with the word itself.
翻译成:也就是说,上下文中的每一个词都考虑(收集)在内,也包括那个单词本身;
①可以这样把That is to say后面的逗号换成that么?
②along with the word itself作伴随状语,伴随状语是谓语的伴随状语么?
③怎么理解“也包括那个单词本身”?

你的翻译是对的.
1,不能,that is to say 是个插入语=in other words,与后面的句子之间要用逗号隔开.
2,个人觉得,along with the world itself 不是伴随状语,而是the context of each word 的同位语.我们还可以把它放在前面:That is to say,the context of each word along with the word itself is collected.