must和have to的区别
<p> 1：<span word="must">must</span>多表示主观需要或责任感的驱使有必要或有义务去做某事，多译为必须，而<span word="have">have</span> <span word="to">to</span>多表示客观存在的环境所限,即客观要求(无奈)而为之，多译为不得不干某事。</p><p> 例：<span word="I">I</span> <span word="must">must</span> <span word="clean">clean</span> <span word="the">the</span> <span word="room">room</span> <span word="because">because</span> <span word="there">there</span> <span word="are">are</span> <span word="too">too</span> <span word="dirty">dirty</span>.(无人强迫) 因为太脏了，我必须要打扫房间。</p><p> <span word="We">We</span> <span word="must">must</span> <span word="be">be</span> <span word="there">there</span> <span word="on">on</span> <span word="time">time</span>. (责任感的驱使)我们一定准时到达。 <span word="I">I</span> <span word="have">have</span> <span word="to">to</span> <span word="do">do</span> <span word="my">my</span> <span word="homework">homework</span> <span word="now">now</span>.(不得不做) 我现在不得不做作业。</p><p> <span word="I">I</span> <span word="have">have</span> <span word="to">to</span> <span word="leave">leave</span> <span word="school">school</span> <span word="because">because</span> <span word="my">my</span> <span word="family">family</span> <span word="is">is</span> <span word="poor">poor</span> <span word="now">now</span>.(无奈) 因为家里穷了，我不得不退学。</p><p> 区别2：<span word="must">must</span>没有时态的变化，而<span word="have">have</span> <span word="to">to</span>有时态的变化。</p><p> 例：<span word="Daming">Daming</span> <span word="was">was</span> <span word="hurt">hurt</span>. <span word="The">The</span> <span word="doctor">doctor</span> <span word="said">said</span> <span word="he">he</span> <span word="had">had</span> <span word="to">to</span> <span word="stay">stay</span> <span word="in">in</span> <span word="hospital">hospital</span> <span word="for">for</span> <span word="about">about</span> <span word="two">two</span> <span word="weeks">weeks</span>. <span word="His">His</span> <span word="father">father</span> <span word="has">has</span> <span word="to">to</span> <span word="go">go</span> <span word="to">to</span> <span word="take">take</span> <span word="care">care</span> <span word="of">of</span> <span word="him">him</span>.</p><p> 大明受伤了。医生说他大概得住院两周，他的父亲得去照顾他。 <span word="We">We</span> <span word="dont">dont</span> <span word="have">have</span> <span word="to">to</span> <span word="go">go</span> <span word="to">to</span> <span word="school">school</span> <span word="on">on</span> <span word="Sundays">Sundays</span>. 星期天我们不必上学。</p><p> 区别3：<span word="must">must</span>的否定为<span word="mustnt">mustnt</span>， 多表示禁令。</p><p> 例：<span word="No">No</span>!<span word="You">You</span> <span word="mustnt">mustnt</span> <span word="turn">turn</span> <span word="left">left</span>! <span word="You">You</span> <span word="must">must</span> <span word="turn">turn</span> <span word="right">right</span> <span word="into">into</span> <span word="The">The</span> <span word="Strand">Strand</span>. 不!你不能向左转!你应该向右转进入到<span word="strand">strand</span>中。</p><p> 由<span word="must">must</span>引起的疑问句，肯定回答要用<span word="must">must</span>或<span word="have">have</span> <span word="to">to</span>，否定回答要用<span word="neednt">neednt</span>或<span word="dont">dont</span> <span word="have">have</span> <span word="to">to</span>，意思是不必 此用法在中考中的单选题中容易出现!</p>
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