Past perfect
n. （动词的）过去完成时
🧩 词语组成解析
past
[pæst]
adj. 过去的，以前的;结束的;前任的;
n. 过去，过往;往事;[语]过去时;
prep. 超过，超出;远于;越过;
adv. 经过，超过;
🗣️ 情景例句
I don't care how much I have to study. I have to pass this exam.
我不介意要学多少东西。我必须得通过考试。
Cartons are seaworthy.
纸箱适合海运。
We had to climb over some rocks and it started to rain.
我们不得不爬过一些岩石，这时开始下起雨。