I have fewer friends than you (more)
.you have more  friends than me
People will use flying car in the future
=>  flying car will be used in the future
Despite of being hungry , she doesn’t eat anything (Althoungh)
=> Althoungh she is  hungry , she doesn’t eat anything
Sam lived in London when she was young. (Used to)
=> sam Used to live  in London when she was young.

1. I have more friends than you
2. Flying car will be used in the future
3. Although she is hungry, she doesn't eat anything
4. Sam used to live in London when she was young