Go for it J9 Look and Remember get got gotten go went gone leave left left start started started write wrote written eat ate eaten ring rang rung run ran run see saw seen learn learned/learnt learned/learnt Learn some sentences1
We had learned 8 units by the end of last week
By the time we got to school ,the bell had rung
When Tom reached the cinema ,the film had been on for 5 minutes
构成:过去完成时由助动词 had+ 过去分词构成
用法:过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作
它表示动作发生的时间是过去的过去
常与 by 、 before 等构成的短语连用 , 也可用 when,before等引导的从句或通过上下文表示
They had already had breakfast before they arrived at the hotel
在他们到达旅馆之前,他们已经吃早饭了
He said that he had never seen such a beautiful bird before
他说他以前从来没有看过这样美丽的鸟
gothadhadgottenleftran She got up late
By the time she got up,her brotherhad already take