They used to be dependent on their parents' support. → Now they are independent.

Jack and his family members are motivated by a desire to help people. → Like Jack and his family members, many people are motivated by a desire to help others.

Buying street food is a common practice in my city. → It is common to buy street food in my city.

Today mushing is a sport rather than a means of transport. → Today mushing is more of a sport than a means of transport.

I won't understand the lesson if you don't explain it again. → Unless you explain it again, I won’t understand the lesson.