HTHT: 

1. They have bought that house since 2014.

(-) They haven’t bought that house since 2014

(?) have they bought that house since 2014? 

2. I have known how to drive when I was 20.

(-) I haven’t known how to drive when I was 20

(?) have you known how to drive when you was 20 ?

3. She has eaten this cake.

(-) she hasn’t eaten this cake

(?) has she eaten this cake? 

4. He has gone to Dalat for a year.

(-) he hasn’t gone to Dalat for a year 

(?) has he gone to Dalat for a year?

5. We have played with the cat. 

(-) we haven’t played with the cat

(?) have they played with the cat ?

Các động từ:

1. Go-went-gone

2. Be-was/were-been

3. Eat-ate-eaten

4. Feel-felt-felt

5. Do-did-done

6. Know-knew-known

7. Teach-taught-taught

8. Think-thought-thought

9. Burn-burnt-burnt

10. Clap-clapt-clapt

1.write>wrote>written

2.say>said>said

3.win>won>won

4.sleep>slept>slept

5.eat>ate>ate

6.beat>beat>beaten

7.begin>began>begun

8.bite>bit>bitten

9.bring>brought>brought

10.burst>burst>burst