He acted as if he were to leave the next day.

问题描述:

He acted as if he were to leave the next day.
他表现得就像下一天要走一样.(实际上他没走)
这里是对过去将来的假设,我用的是对一般将来的假设形式(were to),这样对吗?

be to do本来就有将来的含义
所以本句完全正确
如果(实际上他没走)必须用were 千万别被忽悠了.