Visibility

可见性

A term used in government-binding theory for a condition from which much of the content of the Case Filter can be derived. An element is visible for theta-marking only if it is assigned Case. On the basis of this condition, a noun phrase can receive a theta role only if it is in a position to which Case is assigned, or is linked to such a position (as in there is a lamp in the room, where Case is transferred from there to the lamp).

管辖与约束理论术语，指格过滤的许多内容可以从其中派生而来的一个条件。一个成分只有被指派格后对题元标记而言才是可见的。根据这个条件，一个名词短语只有处于指派有格的位置，或与这样一个位置相连系，才能接受一个题元角色（例如there is a lamp in the room“房间里有一盏灯”，其中格从there转移到the room“房间”）。