1. In the sentence "He looked young, erect and well," the predicative is expressed by the adjectives "young," "erect," and "well." These adjectives describe the subject "he" and indicate his appearance and physical state. 2. In the sentence "The young man, said the general, seemed a decent fellow, I thought," the predicative is expressed by the noun phrase "a decent fellow." This noun phrase describes and characterizes the young man and indicates the general's opinion of him. 3. In the sentence "It was he who persuaded them to meet us at the station," the predicative is expressed by the relative clause "who persuaded them to meet us at the station." This relative clause identifies and describes the person "he" and indicates his action of persuading them to meet at the station. 4. In the sentence "The chief was a friend of Christie's and she knew that she was one of his favorites," the predicative is expressed by the noun phrase "one of his favorites." This noun phrase describes and characterizes Christie, indicating her status as a favorite of the chief. 5. In the sentence "His first instinct was to pass on without a word, but Lawson did not give him an opportunity," the predicative is expressed by the verb phrase "pass on without a word." This verb phrase describes and characterizes his first instinct, indicating his intention to continue without speaking. 6. In the sentence "Pete sounded relieved," the predicative is expressed by the adjective "relieved." This adjective describes and characterizes Pete's voice or tone, indicating his state of relief. 7. In the sentence "The best thing is doing it at once," the predicative is expressed by the gerund phrase "doing it at once." This gerund phrase identifies and describes the best thing, indicating that it involves immediate action. 8. In the sentence "My greatest wish in the world is that you should be happy," the predicative is expressed by the noun phrase "that you should be happy." This noun phrase describes and characterizes the speaker's greatest wish, indicating their desire for the listener's happiness.