此处the last time 一定要接完成时吗?在文章中看到一句话:In a series of experients the scientists showed the volunteers logos from several fast-food chains or asked them the last time they'd visited.我想问的是,最后几个词
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![此处the last time 一定要接完成时吗?在文章中看到一句话:In a series of experients the scientists showed the volunteers logos from several fast-food chains or asked them the last time they'd visited.我想问的是,最后几个词](/uploads/image/z/5616026-26-6.jpg?t=%E6%AD%A4%E5%A4%84the+last+time+%E4%B8%80%E5%AE%9A%E8%A6%81%E6%8E%A5%E5%AE%8C%E6%88%90%E6%97%B6%E5%90%97%3F%E5%9C%A8%E6%96%87%E7%AB%A0%E4%B8%AD%E7%9C%8B%E5%88%B0%E4%B8%80%E5%8F%A5%E8%AF%9D%EF%BC%9AIn+a+series+of+experients+the+scientists+showed+the+volunteers+logos+from+several+fast-food+chains+or+asked+them+the+last+time+they%27d+visited.%E6%88%91%E6%83%B3%E9%97%AE%E7%9A%84%E6%98%AF%EF%BC%8C%E6%9C%80%E5%90%8E%E5%87%A0%E4%B8%AA%E8%AF%8D)
此处the last time 一定要接完成时吗?在文章中看到一句话:In a series of experients the scientists showed the volunteers logos from several fast-food chains or asked them the last time they'd visited.我想问的是,最后几个词
此处the last time 一定要接完成时吗?
在文章中看到一句话:In a series of experients the scientists showed the volunteers logos from several fast-food chains or asked them the last time they'd visited.
我想问的是,最后几个词“last time they 'd visited”为啥用完成时而不用过去式?用the last time they visited 可否?此处依据是什么?
是否两者可以随意转换?
此处the last time 一定要接完成时吗?在文章中看到一句话:In a series of experients the scientists showed the volunteers logos from several fast-food chains or asked them the last time they'd visited.我想问的是,最后几个词
在这句里,两者可以交换使用 (没有语法上的错误).但习惯上通常是用过去完成时,表达在the scientists showed的之前.,有时间点,但没有特定的时间(若有特定的时间就要用一般过去时).