汉语可说祝贺某人做某事，但英语习惯上不能说 congratulate sb to do sth, 可改说congratulate sb on doing sth。如：
■他写信祝贺她当选为劳模。
误：He wrote to congratulate her to be chosen as a modernworker.
正：He wrote to congratulate her on being chosen as a modern worker.
■我父亲祝贺我通过了考试。
误：My father congratulated me to pass the exam.
正：My father congratulated me on passing the exam.