1. When a cat is in heat, it will meow a lot. You can gently stroke its head to soothe its emotions, or feed it a small treat to calm it down.
2. When a cat is sick and feels unwell, it will also keep meowing. You should take it to the vet for examination and treatment in time. 
3. If a cat is hungry, it will keep meowing to remind its owner to feed it. Make sure to prepare food and water for it in a timely manner.
4. If a cat is entering a new environment and feels uncomfortable, it will keep meowing. It will stop meowing once it gets used to the new environment.
5. When a cat wants its owner to play with it, it will keep meowing in an attempt to get the owner's attention. The owner should spend more time with it and play with it.
