the pen I thought I had lost is on my desk为什么用had lost 的呢?哪位大侠知道的
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the pen I thought I had lost is on my desk为什么用had lost 的呢?哪位大侠知道的
the pen I thought I had lost is on my desk
为什么用had lost 的呢?哪位大侠知道的
the pen I thought I had lost is on my desk为什么用had lost 的呢?哪位大侠知道的
因为前面的动词是thought,过去认为笔丢了,要强调对现在造成的影响.
过去的过去,所以使用过去完成时,即:had lost
从语义看笔丢发生在过去(thought)的过去 ,因此用过去完成时
现在完成时与过去完成时最大区别就在于句子中是否有一个明确的过去式,由动作发生的先后顺序或某些表示时间的短语如before等,可得出。本句中有一个明确的thought,而丢笔发生在我认为的过去,即过去的过去,所以用had lost。