The auxiliary verb appears in front of the main verb, which is typically in its citation form, which we call the ‘base’ form. Note the change in the main verb form in (19b) when the negation is added:
The auxiliary verb appears in frontof the main verb, which is typically in its citation form, which we call the ‘base’ form. Note thechange in the main verb form in (19b) when the negation is added: