## Adding Regular Verbs

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| Adding to the CYC® Lexicon using WALES
| Adding Agentive Nouns
| Adding Irregular Verbs

At the "Add to CYC® Lexicon" page, enter the "root form" of the syntactically regular verb that you want to represent. For verbs, the root form is the infinitive form (the word after "to", as in "to eat"). Recall that a verb is syntactically regular if:

- Its gerund form is [<root> + "ing"] (e.g. "walking") or [<root> - "e" + "ing"] (e.g. "baking") and
- Its past tense and perfect forms are [<root> + "ed"] (e.g. "walked") or [<root> + "d"] (e.g. "baked")

Some examples of irregular verbs include:

- Verbs whose stem (the "root") changes in the past.
  (e.g. "bite" -> "bit", "eat" -> "ate", and "take" -> "took")
- Verbs which double their last letters before adding endings.
  (e.g. "hit" -> "hitting" and "trap" -> "trapping")

Next, select the "Add regular strings to lexicon" button and press "Add Info".

At the "Verb Form" box, enter the infinitive form. You need only to fill out this box, as the parser will recognize all conjugations of syntactically regular verbs. If there are other part-of-speech forms that you want to link to this constant, you may enter those at this time. Click on the "Update Lexicon" button and then "Do It".

Once at the main "Add to Lexicon" page, you follow the same steps in adding denotations as with the other parts of speech (by clicking on "Add other lexical information"). Recall that denotations will appear next to the "denotation-WSn" boxes, where "n" denotes the word-sense number.

Last Update: 03/28/2002