1 I started doing homework two hours ago. -> I have
2 I started working in this company five years ago. -> I have
3 She started writing this novel 3 months ago. -> She has
4 Lan began playing the piano ten years ago. -> Lan has
5 They started learning English 2 weeks ago. -> They have
6 My sister began teaching English 20 years ago. -> My sister has
7 .It began raining half an hour ago. -> It has
8 They began building this house one month ago. -> They have
9 He started having his breakfast 1 hour ago. -> He has
10 Mr. Ba began talking to our teacher an hour ago. -> Mr. Ba has
1 I started doing homework two hours ago. -> I have been doing my homework for two hours.
2 I started working in this company five years ago. -> I have worked in this company for five years.
3 She started writing this novel 3 months ago. -> She has written this norvel for 3 months.
4 Lan began playing the piano ten years ago. -> Lan has played the piano for ten years.
5 They started learning English 2 weeks ago. -> They have learnt English for 2 weeks.
6 My sister began teaching English 20 years ago. -> My sister has taught English for 20 years.
7 .It began raining half an hour ago. -> It has rained for half an hour.
8 They began building this house one month ago. -> They have built this house for one month.
9 He started having his breakfast 1 hour ago. -> He has had his break fast for 1 hour.
10 Mr. Ba began talking to our teacher an hour ago. -> Mr. Ba has talked to ourr teacher for 2 hours.
1. I have been doing HW for 2 hours.
2. I have worked in this company for 5 years.
3. She has been writing this novel for 3 months.
4. Lan has been playing the piano 10 years ago.
5. They have been learning English for 2 weeks.
6. My sister has been teaching English fo 20 years.
7. It has been raining for half an hour.
8. They have been building this house for 1 month.
9. He has been having breakfast for 1 hour.
10. Mr Ba has been talking to our teacher for an hour.
Tom has played the piano for 5 years.
