常与现在完成时连用的单词都有哪些
<p>一、<span word="since">since</span>不管<span word="since">since</span> 是用作介词、连词还是副词，它通常都与现在完成时连用。如：<span word="Charles">Charles</span> <span word="has">has</span> <span word="worked">worked</span> <span word="hard">hard</span> <span word="since">since</span> <span word="leaving">leaving</span> <span word="school">school</span>. 自从离开学校以来查尔斯工作一直很努力。(<span word="since">since</span>为介词) <span word="Great">Great</span> <span word="changes">changes</span> <span word="have">have</span> <span word="taken">taken</span> <span word="place">place</span> <span word="here">here</span> <span word="since">since</span> 1978. 自1978年以来这里发生了巨大的变化。(<span word="since">since</span>为介词)<span word="Her">Her</span> <span word="reading">reading</span> <span word="has">has</span> <span word="improved">improved</span> <span word="greatly">greatly</span> <span word="since">since</span> <span word="she">she</span> <span word="changed">changed</span> <span word="schools">schools</span>. 自从她转校以来，她的阅读水平提高了很多。(<span word="since">since</span>为连词) <span word="You">You</span> <span word="haven">haven</span>’<span word="t">t</span> <span word="changed">changed</span> <span word="muchfy">muchfy</span>; <span word="mso">mso</span>-<span word="char">char</span>-<span word="indent">indent</span>-<span word="count">count</span>: 2.0; <span word="mso">mso</span>-<span word="char">char</span>-<span word="indent">indent</span>-<span word="s">s</span> <span word="since">since</span> <span word="we">we</span> <span word="last">last</span> <span word="met">met</span>. 自从上次我们见面以来，你变化不大。(<span word="since">since</span>为连词) <span word="She">She</span> <span word="moved">moved</span> <span word="to">to</span> <span word="London">London</span> <span word="last">last</span> <span word="May">May</span> <span word="and">and</span> <span word="has">has</span> <span word="since">since</span> <span word="got">got</span> <span word="a">a</span> <span word="job">job</span> <span word="on">on</span> <span word="a">a</span> <span word="newspaper">newspaper</span>. 她去年五月到伦敦，此后一直在报社工作。(<span word="since">since</span>为副词) <span word="He">He</span> <span word="left">left</span> <span word="school">school</span> <span word="in">in</span> 1983. <span word="I">I</span> <span word="haven">haven</span>’<span word="t">t</span> <span word="seen">seen</span> <span word="him">him</span> <span word="since">since</span>. 他1983年离开学校。打那时起我一直没见过他。(<span word="since">since</span>为副词)</p><p>【几点说明】1. 表示时间长度时，通常用一般现在时代替现在完成时。如：<span word="How">How</span> <span word="long">long</span> <span word="is">is</span> <span word="it">it</span> <span word="since">since</span> <span word="you">you</span> <span word="arrived">arrived</span>? 你到来多久了?<span word="It">It</span> <span word="is">is</span> [=<span word="has">has</span> <span word="been">been</span>] <span word="ten">ten</span> <span word="years">years</span> <span word="since">since</span> <span word="he">he</span> <span word="left">left</span> <span word="here">here</span>. 他离开这儿已10年了。2. 对于某些表示状态(如<span word="seem">seem</span>等)的动词，或因句义等方面的原因，有时可能用一般现在时比用现在完成时更合适。如：<span word="It">It</span> <span word="seems">seems</span> <span word="like">like</span> <span word="years">years</span> <span word="since">since</span> <span word="we">we</span> <span word="last">last</span> <span word="met">met</span>. 我们似乎几年未见面了。 <span word="Since">Since</span> <span word="when">when</span> <span word="does">does</span> <span word="the">the</span> $42 <span word="plus">plus</span> $5 <span word="service">service</span> <span word="charge">charge</span> <span word="come">come</span> <span word="to">to</span> $48? 从什么什候开始42元加5元的服务费等于48元了? 3. 若不是指从过去持续到现在，而是指从较远的过去持续到一个较近的过去，则用过去完成时。比较：<span word="He">He</span> <span word="hasn">hasn</span>’<span word="t">t</span> <span word="eaten">eaten</span> <span word="anything">anything</span> <span word="since">since</span> <span word="Tuesday">Tuesday</span>. 自星期二以来他一直未吃东西。(自星期二以来他一直未吃东西。指从星期二到现在未吃东西)<span word="Yesterday">Yesterday</span> <span word="he">he</span> <span word="told">told</span> <span word="me">me</span> <span word="that">that</span> <span word="he">he</span> <span word="hadn">hadn</span>’<span word="t">t</span> <span word="eaten">eaten</span> <span word="anything">anything</span> <span word="since">since</span> <span word="Tuesday">Tuesday</span>. 他昨天告诉我自星期二以来他一直未吃任何东西。(指从星期二至昨天未吃东西</p>
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