1. be動(dòng)詞(am/is/are)

　　主語 be動(dòng)詞(原形) be動(dòng)詞(過去式)

　　I am was He/she/it is was

　　We/you/they are were

　　2.助動(dòng)詞(do/does/did)

　　問句 答句

　　Do+非第三人稱單數(shù)

　　+動(dòng)詞原形…?

　　…do/don't

　　Does+第三人稱單數(shù)

　　…does/doesn't

　　Did+所有主格

　　…did/didn't

　　問句 答句

　　What do you/they/we…

　　+動(dòng)詞原形?

　　I/They/We+動(dòng)詞原形…。

　　What does he/she/it…

　　He/She/It +(動(dòng)詞+S)….

　　What did you/they/we/ he/she/it…

　　I/They/We/ He/She/It +動(dòng)詞過去式。