In grammar, the subject — the word or phrase that is the doer of the action or the topic whose state is described (equivalent to English 'subject').
『犬が歩く』では『犬』が主語だ。
In '犬が歩く', '犬' is the subject.
日本語では主語が省略されることが多い。
In Japanese, the subject is often omitted.
主語と述語の関係を理解すると文の構造が分かりやすくなる。
Understanding the relationship between subject and predicate makes sentence structure easier to grasp.