1. The last time I went to Australia was three years ago.
2. She hasn't visited our school for six months.
3. I ate noodles last month.
4. The last time it rained was four weeks ago.
5. I haven't played tennis before.
6. We wish we had a long summer holiday.
7. While Mai was studying, her mum didn't want to bother her.
8. My brother wishes he could own a cat.
9. When I woke up, I saw that it was snowing.
10. My brother doesn't have a sports bike at the moment.

 

I haven't been to Australia for three years. → The last time I went to Australia was three years ago.
It has been six months since she visited our school. → She hasn't visited our school for six months.
The last time I ate noodles was last month. → I haven't eaten noodles for a month.
It hasn't rained for four weeks. → The last time it rained was four weeks ago.
This is my first game of tennis. → I haven't played tennis before/ever played tennis.
It's a pity that we do not have a long summer holiday. → We wish we had a long summer holiday.
Mai was studying. Her mum didn't want to bother him. → While Mai was studying, her mum didn't want to bother her.
My brother really likes to own a cat. → My brother wishes he had a cat.
I woke up. I saw that it was snowing. → When I woke up, I saw that it was snowing.
At present my brother doesn't have a sports bike. → My brother wishes he had a sports bike. (This expresses a present wish about a current situation.)