基础英语讲座【53】
<p> 【<span word="You">You</span> <span word="must">must</span> <span word="be">be</span> <span word="more">more</span> <span word="careful">careful</span>!】</p><p> <span word="You">You</span> <span word="must">must</span> <span word="be">be</span> <span word="more">more</span> <span word="careful">careful</span>!你一定要小心！</p><p> 这也是一种祈使句，祈使句一般不加主语。但加上主语，反而起一种强调作用。例如：</p><p> <span word="You">You</span> <span word="go">go</span> <span word="out">out</span>!</p><p> 你出去。</p><p> <span word="You">You</span> <span word="come">come</span> <span word="here">here</span>!</p><p> 你过来！</p><p> <span word="You">You</span> <span word="do">do</span> <span word="it">it</span> <span word="a">a</span> <span word="hundred">hundred</span> <span word="times">times</span>.</p><p> 你做一百遍。</p><p> 【<span word="When">When</span> <span word="the">the</span> <span word="lights">lights</span> <span word="are">are</span> <span word="red">red</span> <span word="the">the</span> <span word="traffic">traffic</span> <span word="must">must</span> <span word="stop">stop</span>.】</p><p> <span word="When">When</span> <span word="the">the</span> <span word="lights">lights</span> <span word="are">are</span> <span word="red">red</span> <span word="the">the</span> <span word="traffic">traffic</span> <span word="must">must</span> <span word="stop">stop</span>.当红灯亮了，交通停止。</p><p> 这是一个新的语法现象，句中的<span word="when">when</span> <span word="the">the</span> <span word="lights">lights</span> <span word="are">are</span> <span word="red">red</span> 是一时间状语从句，由<span word="when">when</span>引导，表示当红灯亮了的时候，在句中作状语。能引导状语从句的还有<span word="before">before</span>（在之前），<span word="after">after</span>（在之后）。（有关详细内容请参考本软件的语法部分）例如：</p><p> <span word="When">When</span> <span word="I">I</span> <span word="came">came</span> <span word="into">into</span> <span word="the">the</span> <span word="classroom">classroom</span>,<span word="I">I</span> <span word="found">found</span> <span word="no">no</span> <span word="stunts">stunts</span> <span word="there">there</span>.</p><p> 我进教室的时候，没有发现学生在那儿。</p><p> <span word="Please">Please</span> <span word="turn">turn</span> <span word="off">off</span> <span word="the">the</span> <span word="light">light</span> <span word="when">when</span> <span word="you">you</span> <span word="leave">leave</span> <span word="the">the</span> <span word="room">room</span>.</p><p> 离开房间的时候，请把电灯关了。</p><p> <span word="I">I</span> <span word="can">can</span> <span word="take">take</span> <span word="care">care</span> <span word="of">of</span> <span word="your">your</span> <span word="baby">baby</span> <span word="before">before</span> <span word="you">you</span> <span word="come">come</span> <span word="back">back</span></p><p> 你回来之前我可以给你看孩子。</p><p> 【<span word="If">If</span> <span word="you">you</span> <span word="are">are</span> <span word="not">not</span> <span word="careful">careful</span>,<span word="a">a</span> <span word="car">car</span> <span word="may">may</span> <span word="hit">hit</span> <span word="you">you</span>.】</p><p> <span word="If">If</span> <span word="you">you</span> <span word="are">are</span> <span word="not">not</span> <span word="careful">careful</span>,<span word="a">a</span> <span word="car">car</span> <span word="may">may</span> <span word="hit">hit</span> <span word="you">you</span>.如果你不小心，汽车就会撞了你。</p>
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