be thankful for something 和sb 有什么区别，我如何去理解，下面有几个例句
We need to be thankful for everything we have.
And we should be thankful for him.
And you must have a lot to be thankful for yourself.
Im also thankful for you, Kara, um...
感谢， 老师也可以自己举例说明。
thankful for sth =grateful]for sth 对某事感激
thankful for/to sb =grateful to sb 对某人感激
例句：
Im verythankful[=grateful]forall the help theyve given me. 我十分感激他们给予我的所有帮助。（摘自《韦氏高阶英汉双解词典》p.2172）
Im sothankful formy family. 我非常感激我的家人。（同上）
I am very thankful to you. 我对你非常感激。（摘自张道真《高级英语词典》p.1630）
Im grateful for this opportunity.
=Imgrateful to havethis opportunity.
=Imgrateful that I havethis opportunity.
感激（你）给予我这次机会。（摘自《韦氏高阶英汉双解词典》p.923）
Im ever so grateful to you. 我对你很感激。（摘自张道真《高级英语词典》p.603）
