Where does this definition of helping verb come from?
This entry for helping verb is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is helping verb a noun, verb, or something else?
In this entry, helping verb is tagged as 2n..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.