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lettakelettooklettakenLike the regular verbs, irregular verbs other than the verb to be do not modify in theSimple Past, but have the same form, regardless of the subject. For example, theSimple Past of the irregular verb to take is conjugated as follows:See Exercise 4.I tookyou tookhe tookshe tookit tookwe tookthey tooki. Questions and negative statementsIn both the Simple Present and the Simple Past of verbs other than the verb to be,questions and negative statements are formed using the auxiliary to do and the bareinfinitive.For questions and negative statements in the Simple Past, the Simple Past of theauxiliary to do is used. The Simple Past of to do is conjugated as follows:I didyou didhe didshe didit didwe didthey didIn order to change an affirmative statement into a question, did is placed before thesubject, and the form of the verb is changed from the Simple Past to the bareinfinitive. In the followi ng example, the regular verb to work is used. The verb to workhas the Simple Past worked, and the bare infinitive work.Affirmative StatementI worked.You worked.He worked.She worked.It worked.We worked.They worked .Qu estionDid I work?Did you work?Did he work?Did she work?Did it work?Did we work?Did they work?