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。