1. **Mary has not visited Halong Bay before**
-> This is **the first time Mary has visited Halong Bay.**

2. **This is the first time I have communicated with a foreigner in English**
-> I have **never communicated with a foreigner in English before.**

3. **I have done this exercise routine every day for 10 years**
-> I started **doing this exercise routine 10 years ago.**

4. **Our school has used the same curriculum for students since January**
-> Our school started **using the same curriculum in January.**

5. **She has donated education for children in this remote village for a month**
-> She began **donating education to children in this remote village a month ago.**

6. **We started having a balanced diet five months ago**
-> We have **had a balanced diet for five months.**

7. **My neighbour began working out to improve his health in 2022**
-> My neighbour has **worked out to improve his health since 2022.**

Mary has not visited Halong Bay before -> This is the first time Mary has not visited Halong Bay.
This is the first time I have communicated with a foreigner in English -> I have not communicated with a foreigner in English before.
I have done this exercise routine every day for 10 years -> I started doing this exercise routine 10 years ago.
Our school has used the same curriculum for students since January -> Our school started using the same curriculum for students in January.
She has donated education for children in this remote village for a month -> She began donating education for children in this remote village a month ago.
We started having a balanced diet five months ago -> We have had a balanced diet for five months.
My neighbour began working out to improve his health in 2022 -> My neighbour has worked out to improve his health since 2022.

1. **Mary has not visited Halong Bay before**
-> This is **the first time Mary has visited Halong Bay.**

2. **This is the first time I have communicated with a foreigner in English**
-> I have **never communicated with a foreigner in English before.**

3. **I have done this exercise routine every day for 10 years**
-> I started **doing this exercise routine 10 years ago.**

4. **Our school has used the same curriculum for students since January**
-> Our school started **using the same curriculum in January.**

5. **She has donated education for children in this remote village for a month**
-> She began **donating education to children in this remote village a month ago.**

6. **We started having a balanced diet five months ago**
-> We have **had a balanced diet for five months.**

7. **My neighbour began working out to improve his health in 2022**
-> My neighbour has **worked out to improve his health since 2022.**