i think that we must be talking about it in private 这个句子错了吗?错在哪里?be 后面是n吗

I think we have to talk about it in private

错了，must后面不能用进行时，must后面为talk

觉得 Must 后面直接跟动词原形 talk就可以了I think that we must talk about it in private.
如果是一定要加 be 可以加talking.是没错的.

I think that we must talk about it in private.
be加动词的话必须是v-ing形式
表被动时v-ed形式