Please explain this English grammar. I don't understand.

The normal word order should be he is a brave man (he is a brave man), A is an indefinite article, and normal should be placed before the adjective Brave. Through usually leads to adverbial clauses, which are translated as "although, although". Is is a relative verb followed by a predicate (not a slogan, but the input method). The predicate of this sentence is a brave man, which is a noun modified by adjectives bravely. In this case, A should be placed after brave, that is, brave a man, and the adverbial clause should be led to the front of the sentence in advance.