he didn't do his homework last night,so he did .还是so he didn't.来表示他确实是.
问题描述：
he didn't do his homework last night,so he did .还是so he didn't.来表示他确实是.
so有一种用法.so+主语+助/情/be
答
so he did表示他确实做作业了.应该是对上文的否定,这是一道语法题,我认为应该是两个人的对话————He didn't do his homework last night.
————So he did.
“so +主语+助动词”表示加强语气,