The subject is the subject that performs the action or action of the sentence, the predicate is a statement or description of the subject's action or state, and the object is the receiver of an action (verb). When the predicate part of a sentence contains two verbs (some (One is an adjective), and corresponds to two different subjects, that is, the object of the previous predicate is also the subject of the next predicate, which is equivalent to a verb-object structure and subject-predicate structure connected together, and there is no phonetic pause in it, which conforms to this format The sentence is called cum statement. According to the above definitions, Which of the following are not part of the sentence:. ['Wind blows snowflakes.', 'Inspection work by superiors.', 'Father Yang, the chase.', 'People cannot step into the same river twice.']