be disappoint with sb.at sth有这个语法点么 例句?

be disappoint with sb.at sth有这个语法点么 例句?
be disappoint with sb.at sth
有这个语法点么 例句?

be disappoint with sb.at sth有这个语法点么 例句?
对某人做的某事很失望
I am dispointed with you at that you did not get any medals in the games