I. Rewrite the sentences using the present perfect or the present perfect continuous:
1. I have discussed my research proposal with my professor since the beginning of my course.
2. Nam has studied E for 2 years.
3. I have learned how to play the piano for eight months.
4. He has attended online vocational courses twice: in 2012 and in 2013.
5. They have visited this college three times.
6. The British Council has used IELTS as an international standardised test of English for non-native
English language speakers for a long time.
7. She has done her research project since last month.
8. The university has built a new campus since May.
- Thì hiện tại hoàn thành: S+have/has (not) + Vpp +O
- Thì hiện tại hoàn thành tiếp diễn: S+have (not) been +Ving +O
