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1.after,in这两个介词都可以表示“(时间)以后”的意思after以过去为起点,表示过去一段时间之后,常用于过去时态的句子中?等)提如:Shewentafterthreedays.她是三天以后走的in以现在为起点,表将来一段时间以后,常用于将来时态的句子中如:Shewillgointhreedays.她三天以后要走2.howlong,howoften,howsoonhowlong指多长时间,主要用来对一段时间(如threedays,fourweeks问?如:Howlongagowasit?这是多久前的事了?howoften指每隔多久,主... 2024-10-2317819.88 KB5页43
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