1. be動詞(am/is/are)

主語 be動詞(原形) be動詞(過去式)

I am was He/she/it is was

We/you/they are were

2.助動詞(do/does/did)

問句 答句

Do+非第三人稱單數(shù)

+動詞原形…?

…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…

+動詞原形?

I/They/We+動詞原形…。

What does he/she/it…

He/She/It +(動詞+S)….

What did you/they/we/ he/she/it…

I/They/We/ He/She/It +動詞過去式。