比如：Topic 是 Money
1. Money is important to our daily life, but it is not everything
1）Money is imortant
2) Money isn't everything
2. Money can't buy love
1) You can marry a beautiful wife or a rich husband, but..;
3. Money can't buy good health;
1) You can buy expensive medicine, invite the best doctors, but ...
4. Money can't buy knowledge;
1) You can go to the best school and invite the best teacher for your son or daughter, but ...