Treat as

Treat the problem as a challenge.

把这个问题当作一个挑战来对待。

Treat sb. for sth.

Treat her for her illness.

为她的疾病治疗她。

Treat sb. as sth.

Treat him as an equal.

把他当作一个平等的人对待。

Treat of

Treat of the importance of exercise.

讨论锻炼的重要性。

Treat with

Treat the matter with care.

小心翼翼地处理这件事。

这些例句展示了"treat"这个词在不同语境下的多种用法，包括作为动词和介词短语。希望这些例句对你有所帮助。