未来完成式:以未来将发生的某件事或时间为参照点,另一较近的未来事件将会在其之前完成(completed by a feature time)
Present Future 1 Future 2
——————|——————|——————|————→
Speech time TV go to bed
Reference
I will have watched TV before my bedtime.
I will have watched TV before I go to bed.
I will have watched TV before going to bed.
——劉美君. (2012). 英文文法有道理! 重新認識英文文法觀念. 聯經.