请教英语大师,为什么句子The man did not wake up until the bed had struck

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请教英语大师,为什么句子The man did not wake up until the bed had struck the bed
和句子After he had put it on the floor,he went to sleep again.要用过去完成时呢?全篇都是用个过去时,为什么这两句不能用过去时?菜鸟真心求解

he went to sleep 是一个过去时,在这个过去时之前发生的动作就要用过去完成时,表明他是先把东西放在了地板上,之后才去睡觉的.又如：
After he had finished his homework,he was allowed to go and play football.在他完成作业之后,他才被允许出去踢球.

请教英语大师,为什么句子The man did not wake up until the bed had struck the young man did not wake up until the bed had struck the g 那个年轻人直到床撞到地上才醒过来,The young man did not wake up until the bed 求翻译the man did not buy a digital tv until he had saved enoug 一道英语题求解The boy usually does not wake up until 6 o'clock in t 初中英语改同义句The boy usually does not wake up until 6 o'clock i 翻译Not until most of the people had left the airport did he s 英语句子的转换Not until I reached home did I realize that I had los i did not understand the problem until he had explained it.我 i did not understood the problem until he had explained it这句 did not disturb him until he had fimished the work.但我认为We ha i did not understood the problem until he had explained it.