had never flown 是過去完成時(shí)
也就是"過去的過去",相對(duì)于
it was的時(shí)候,再住前,不能用現(xiàn)在完成時(shí).
如果是it is ,用has never flown
The man sitting next to me on the plane was very nervous..
The man sitting next to me on the plane was very nervous..
It was his first flight.He ____(never,fly) before.
為什么用had never flown 不用has never flown
It was his first flight.He ____(never,fly) before.
為什么用had never flown 不用has never flown
英語人氣：420 ℃時(shí)間：2019-11-14 13:04:40
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