
In linguistics, an impersonal verb is one that has no determinate subject. For example, in the sentence `It rains`, rain is an impersonal verb and the pronoun it does not refer to anything. In many languages the verb takes a third person singular inflection and often appears with an expletive subject. In the active voice, impersonal verbs can be.....
Found on
http://en.wikipedia.org/wiki/Impersonal_verb

A verb without a real subject--see 'impersonal verb construction,' below.
Found on
http://www.encyclo.co.uk/local/22385
No exact match found.