初中英语时态知识点：过去进行时的用法详解
<p> 过去进行时的用法详解</p><p> (1) 表示在过去某一时间正在进行的动作，此时句中往往有表示过去的时间状语<span word="then">then</span>,<span word="at">at</span> <span word="that">that</span> <span word="time">time</span>,<span word="this">this</span> <span word="time">time</span>,<span word="yesterday">yesterday</span>等。</p><p> <span word="I">I</span> <span word="was">was</span> <span word="doing">doing</span> <span word="my">my</span> <span word="homework">homework</span> <span word="when">when</span> <span word="my">my</span> <span word="mother">mother</span> <span word="came">came</span> <span word="to">to</span> <span word="home">home</span>.</p><p> (2)叙述在过去的同一时间都在进行的几个动作，通常用<span word="While">While</span></p><p> <span word="I">I</span> <span word="was">was</span> <span word="studying">studying</span> <span word="at">at</span> <span word="college">college</span> <span word="while">while</span> <span word="my">my</span> <span word="brother">brother</span> <span word="was">was</span> <span word="teaching">teaching</span> <span word="at">at</span> <span word="university">university</span>..</p><p> (3)表示在过去某一段时间内一直持续进行的动作</p><p> <span word="They">They</span> <span word="were">were</span> <span word="expecting">expecting</span> <span word="you">you</span> <span word="yesterday">yesterday</span>, <span word="but">but</span> <span word="you">you</span> <span word="didnt">didnt</span> <span word="turn">turn</span> <span word="up">up</span>.</p>
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