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As, when和while兩者都是連詞,但在某些前提下,三者也會(huì)有一點(diǎn)區(qū)別。 As, when or while 我們可以用as, when和while來表示“當(dāng)...同時(shí)發(fā)生的兩個(gè)事件: Another family arrived as we were leaving. When my father was out working
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