Auxiliary verb- the past tense of the (to be) "did" is used. Subject- the subject comes after the auxiliary verb "did". Main Verb- stays in the base form. Auxiliary VerbSubjectMain Verb 1st personDidIforgetto pay the bill? 2nd personDidyoucleanyour room?
work alone ,imagine you are years old .write a flow chart of your life from the time you were bornup to your 30th birthday.when you write adout past time ,remember to put the verbs in the past tense 扫码下载作业帮搜索答疑一搜即得