Task 1: Gạch chân dấu hiệu và xác định thì của câu.
1. Did Mai go to the zoo last weekend?
2. Peter is playing football with his friends at the
moment.
3. They are my friends.
4. He often goes fishing in his free time.
5. My parents got married in 1995.
6. We hardly water flowers in the aftern
$(-)$ S + am/is/are + not + V_ing + O/…
$(?)$ Am/Is/Are + S + V_ing + O/…?
$(-)$ S + am/is/are + not + O/…
$(?)$ Am/Is/Are + S + O/…?
$→$ Trả lời: _ Yes, S + am/is/are.
_ No, S + am/is/are + not.