Common errors

At the right times, kind people know how to be themselves.

Key points:

• Object confused as adverbial

• interrogative is not relative adverb

Your Original Label	Correction
“how to be themselves” is adverbial	It functions as a noun clause / object of “know”, not adverbial.
“how” is a relative adverb	It is an interrogative adverb introducing an infinitival clause.
“themselves” is an object of “to be”	It is a subject complement, since to be is a linking verb.

Notes

• “themselves is a subject complement of the implied subject of ‘to be’

Misc

• Classified a possessive determiner as a complement

jury’s decision

🚩 Use “clause” and not “sentence”

🚩 If it’s inside a noun phrase and it shows possession (X’s / of X), it is never a complement. It is a genitive determiner or modifier.

🚩 You correctly noted passive construction, but be precise: by CGI models” is not merely ‘adverbial’ — it is specifically an agent phrase in a passive construction.

🚩 You misidentified the “but rather …” segment as a restrictive subordinate relative phrase, when it is actually part of the main clause as a contrastive subject complement