回复: 求教:怎样检索LCMC中的n+n
wtag is the word tag, i.e. POS. I am using LCMC version 2, which may look different from yours.
As regards results, they might be different from what you have expected, but they are indeed n* + n* sequences (at least according to the tags in the corpus).
If you want to retrieve sequences are look more like n+n you have expected, then you should narrow down your search, e.g. by including the POS tag n only, rather than also including ng and nr etc.