误Excuse me for I have not answered your letter.
正Excuse me for not answering your letter.
析excuse宾语后的介词for不能接句子,一般接动名词。
艾德为自己迟到找借口,说自己的表慢了。误Ade excused him for his tardiness, saying his watch was wrong.
正Ade excused himself for his tardiness, saying his watch was wrong.
析表示“为自己…找借口〔开脱〕”,要用excuse oneself for。
误As excuse of her failure she said she had been ill.
正In excuse of her failure she said she had been ill.
析表示“作为…的借口”,可说in excuse of,不可说as excuse of。