3句英文任你选

I can't come to your dinner after all.
我终究不能参加你的晚宴。

I know this is inexcusable.
我知道这是不可原谅的。

I was called away on business , and in the rush forgot to do as I had promised.
我因公离开，匆忙中就忘了之前所承诺的事。

半个句型要记牢

forget to do (忘记要做某事)

Tip:注意与 forget doing的区别: forget to do意思是"忘记要去做某事"表示未做;如: The light in由e office is still on. He forgot to turn it off. (办公室的灯还在亮着，它忘记关了。)表示没有做关灯的动作。forget doing意思是"忘记做过某事 "表示已做;如 He forgot turning the light off .他忘记他已经关了灯了。这里表示已做过关灯的动作。