i think he must be a teacher,isn't he ? 这句反义疑问句为什么这样变?

Question

i think he must be a teacher,isn't he ?
这句反义疑问句为什么这样变?
为什么不是mustn't he?
i think he can be a teacher反义疑问句是不是i think he can be a teacher,isn't he?
这句是不是这样变?是不是从句有be反义疑问句就要把be还原?求高手解答!
he thinks she isn't a student反义疑问句是不是he thinks she isn't a student,does he?

Answer 1

这个问题嘛...应该这样回答：

我直接告诉你吧，must be是表现在推测的，表现在推测知道什么意思吧，must be 一定 may be 可能 can't be不可能 。以上三个就是表现在推测的标志。凡是表现在推测的，肯定就都用isn't 否定就用is
给你点列句吧，要不然你不懂
He must be a teacher , isn't he ? 他一定是个老师，不是吗？
He may be a teacher ,isn'e he ?他可能是个老师，不是吗？
He can't be a teacher , is he ?他不是能是个老师，是吗？
认真比对下这三句话就行了

至于第二个问，我相信你已经懂了。
第三个问嘛，应该是带宾语从句的反义疑问句了，这时呢，疑问部分要与主句一致，还是给你点列举吧，要不然不好理解：
He said he would come , didn't he ?他说他准备过来了，是不是？
你那句话就应该是
He thinks she isn't a student , does he ? 完全正确！
为了区分，我在多说一句吧
当陈述部分为第一人称时，就是句子开头是i/we时，记得疑问部分与从句一致，给你点列句。
I don't think he can finish the work ,can he ?我不相信他能完成这工作，有木有？
仔细比对下就行了

Answer 2

isn't he = 他是不是
mustn't he = 他比不必须做
看be, not must >.>
he thinks she isn't a student,doesn't he追问

可我们老师说是he thinks she isn't a student,does he他说第三人称的反义疑问句看主句不管重句是不是否定 还有i think he can be a teacher,isn't he是对的吗?

追答

i think he （can） be a teacher,（can't ）he
呃。。。哦。。好象是 does he.
"他说第三人称的反义疑问句看主句不管重句是不是否定" x.x 对不起这句单纯太难看不懂

追问

he thinks she isn't a student,doesn't he为什么不是doesn't he?为什么为什么?这不是和must是一样的吗?为什么must是doesn't he而can是can't he?

追答

D: i don't know
he thinks she isn't a student,doesn't he 如果我写我会写成 he thinks she's not a student, doesn't he.
在这东西。。。说着说着就说出来了