Wh-agreement refers to morphological changes triggered by wh-movement, usually in verbs or complementisers. It occurs in a number of Bantu languages, Austronesian languages including Chamorro and Palauan, Algonquin languages such as Ojibwe, as well as Hausa, French, Scottish Gaelic, and Irish.http://artsites.uottawa.ca/eajmathieu/doc/Lochbihler_Mathieu.pdf
For example, in Chamorro, the infix (labelled ) is attached to the verb to mark agreement with the nominative question phrase following subject extraction:
Additionally, some languages have distinct agreement morphology depending on the case of element being moved. In the case of object extraction in Chamorro, the verb fa'gasi instead becomes fina’gasése (marked with ):
In French and Scottish Gaelic, special complementisers are used in cases of wh-movement:
References