1. He has a new book2. He lives in the country3. He will see you tomorrow.4. He can understand.5. He must write a letter.6. He may come next week7. He does a lot of work every day.8. He did a lot of work yesterday.9. He played football.注意一下谓语动词的形式就可以啦，尤其是一般现在时的时候注意第三人称单数。
