The Case Condition principle requires that a noun phrase have Case and Case is assigned by V(verb) or P(preposition) to the object position, or by AUX(auxiliary) to the subject position.
格条件要求名词词组必须有格，而格被动词或介词指定在宾语位置，或者被助动词指定在主语位置。
2
Aux input Connections: the input for each auxiliary source is a set of female RCA jacks mounted directly to the Aux-In Selector module.