1. Show a relationship
1.1. Regarding
1.1.1. She has said nothing regarding your request.
1.2. About
1.2.1. I'm very worried about my brother
1.3. Concerning
1.3.1. He asked several questions concerning the future of the company
1.4. In terms of
1.4.1. I can help you in terms of your academic problems but not your financial ones.
2. Give more information
2.1. On top of
2.1.1. A clock and a statue are on top of the building.
2.2. In addition to
2.2.1. These sums are in addition to 5 million invested earlier
2.3. Along with
2.3.1. There is always a bill along with the store parcel.
3. Compare or contrast
3.1. Like
3.1.1. She's wearing a dress like mine.
3.2. On the contrary
3.2.1. This is not necessarily bad; on the contrary, it is sometimes quite useful.
4. Show location and position
4.1. In
4.1.1. He sits in the back of the car.
4.2. At
4.2.1. The football game is at the stadium
4.3. Through
4.3.1. They walked slowly through the woods
4.4. Over
4.4.1. There was a lamp hanging over the table.
5. Indicate Time
5.1. Since
5.1.1. It has been raining since morning
5.2. Before
5.2.1. He arrived before me.
6. Give a reason
6.1. Because of
6.1.1. He walked slowly because of his bad leg.
6.2. Due to
6.2.1. He almost died due to lack of oxygen.
6.3. In view of
6.3.1. In view of the fact that Hobson was not a trained economist, his achievements were remarkable.