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Chapter10:TheFourMainFormsVerbsareoneoftheessentialingredientsinthecreationofsentences.Verbstellthereaderwhensomethingoccursthroughtheuseoftense.Tenseistime.Verbstellthereaderwhethertheactionishappeningnow,inthepast,orinthefuture.Verbshavefourmainformsanditistheseformsusedaloneorincombinationwithhelpingverbsthatcreatethetenses.Thefourmainformsarethepresentform,thepastform,thepresentparticiple,andthepastparticiple.Inadditiontohavingfourforms,verbsalsocomeintwotypes-regularandirregular.Regularverbsusethesamepatterntocreatethemainverbforms;irregularverbsdonotusethesamepattern.ThreeofthemostcommonverbsinEnglishareirregularverbsandneedspecialconsideration.Thoseverbsarebe,have,anddo.Goodwritingrequiresthatthewriterhavemasteryofverbsandthemainformsofbothregularandirregularverbs.