The grammatically correct form of Erste Stunde Hanz hat Geschichte is Hanz hat Geschichte in der ersten Stunde (or Hanz hat Geschichte in der ersten Stunde) - Hanz' first lesson is history.
Well, right now the sentence literally means: "He sees crazy." This sentence does not make sense. In order to correctly write the sentence meaning, "He looks/appears crazy" (gramatically correct), we...
It is correct as it stands. Also correct would be to add the understood verb at the end: You were not as comfortable as he was. --- In spoken English, "as him" is perfectly acceptable. In written, at...