had landed 是相對謂語described 來說的,由于先于described 發(fā)生,過去的過去,所以是過去完成時
were moving 側重陳述過去的某一特定時候的情景,狀態(tài),所以用過去進行時
簡單點說.用過去完成時,表示在過去某一特定事件以前做過某事
用過去進行時則表示在過去某一特定時間在做的事
如不明白請追問
He described where they had landed and told how they were moving across the USA
He described where they had landed and told how they were moving across the USA
為什么前面是過去完成時,而后面是過去進行時they were moving across
為什么前面是過去完成時,而后面是過去進行時they were moving across
英語人氣:186 ℃時間:2019-10-24 02:30:10
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