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 【問】 我已知道,could表示潛能。I could pass the examination.是說“我曾有能力通過考試?!?而不是指“我成功地通過了考試”。而I was able to pass the examination.則是指“我確實(shí)成功地通過了考試”。也就是說,was(were) able to是強(qiáng)調(diào)動作的完......(本文共 444 字) [閱讀本文] >>