1. The last time John visited Paris was 10 months ago.
John hasn't visited Paris for 10 months.
2. Spending too much money will make you broke someday
If you spend too much money, it will make you broke someday.
3. The student is from china. He sits next to me.
The student who sits next to me is from china.
4. The policeman wasn’t very helpful. I asked him.
The policeman whom I asked wasn't very helpful.
5. I have never seen such a nice girl like that.
This is the nicest girl I have ever seen.
6. Before I did voluntary work for the poor , I had visited them.
After I had visited them,I did voluntary work for the poor.
7. She was cold, so she put on her coat.
Because she was cold, she put on her coat.
8. Unless she eats healthy food, she will be sick easily.
If she doesn't eat healthy food,she will be sick easily.