Morphological analyser/Exercises

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English plurals

Orthographic, not necessarily phonological

-s plurals

  • book<n><pl> ↔ books, name<n><pl> ↔ names, computer<n><pl> ↔ computers, house<n><pl> ↔ houses, phone<n><pl> ↔ phones, bread<n><pl> ↔ breads, judge<n><pl> ↔ judges, toy<n><pl> ↔ toys, piano<n><pl> ↔ pianos, proof<n><pl> ↔ proofs, chief<n><pl> ↔ chiefs
  • f→v: wife<n><pl> ↔ wives, life<n><pl> ↔ lives

-es plurals

  • watch<n><pl> ↔ watches, box<n><pl> ↔ boxes, waitress<n><pl> ↔ waitresses, tomato<n><pl> ↔ tomatoes, dish<n><pl> ↔ dishes, virus<n><pl> ↔ viruses, wish<n><pl> ↔ wishes, boss<n><pl> ↔ bosses
  • y→i: baby<n><pl> ↔ babies, fly<n><pl> ↔ flies, berry<n><pl> ↔ berries, category<n><pl> ↔ categories, supply<n><pl> ↔ supplies
  • f→v: leaf<n><pl> ↔ leaves, wolf<n><pl> ↔ wolves, half<n><pl> ↔ halves, loaf<n><pl> ↔ loaves
  • x→c: appendix<n><pl> ↔ appendices, matrix<n><pl> ↔ matrices
  • doubled letter: quiz<n><pl> ↔ quizzes

irregular plurals

  • -en suffix: child<n><pl> ↔ children, ox<n><pl>|oxen
  • phonological alternation: man<n><pl> ↔ men, goose<n><pl> ↔ geese, mouse<n><pl> ↔ mice, tooth<n><pl> ↔ teeth, crisis<n><pl> ↔ crises
  • no change: deer<n><pl> ↔ deer, fish<n><pl> ↔ fish, sheep<n><pl> ↔ sheep
  • fully suppletive: person<n><pl> ↔ people
  • ending changes:
    • is→es: thesis<n><pl> ↔ theses, analysis<n><pl> ↔ analyses, crisis<n><pl> ↔ crises
    • um→a: stratum<n><pl> ↔ strata, millennium<n><pl> ↔ millennia
    • us→i: syllabus<n><pl> ↔ syllabi, nucleus<n><pl> ↔ nuclei, alumnus<n><pl> ↔ alumni
    • a→ae: larva<n><pl> ↔ larvae, alumna<n><pl> ↔ alumnae
    • on→a: criterion<n><pl>|criteria}}, phenomenon<n><pl> ↔ phenomena
  • misc/other: die<n><pl> ↔ dice