约好了英文

之前我们约好了去看电影 We dated long ago for a movie.

个人感觉中文的“约好”，不一定非得翻出来。如果有第三个人约你们，或问（比如明天）有什么打算，可以说：I will play basketball with him（tomorrow）.如果有人约“他”去干别的事情，你可以对对方说：He and I are to play basketball together.以此告诉对方“他”已经有约在身了。如何翻译，还是要根据语境灵活处理。

I have made an appointment to play basketball with him

by arrange a meeting

She didn't come although we had made an appointment.

promissory

We made a date to go to the movies