1.用作形容词:感谢的,感激的;欣慰的[(+for)][+to-v][+that]
I was thankful for her help.
我感谢她的帮助。
Most of the time I'm just thankful that I've got a job...
多数时候我只是庆幸自己有份工作。
I was so thankful for his support...
我对他的支持非常感激。
Through it I know that we should live with a thankful heart.
通过这首歌我知道我们应该怀着一颗感恩的心去生活。
2.be thankful to sb感谢某人
be thankful for sth 感谢某物、某事
be thankful for doing sth 感谢做某事
I am thankful to my parents.
我很感谢我的父母。
I am thankful for your help.
我很感谢你的帮助。