2017届高考英语1轮复习牛津译林江苏专版课件：M7 Unit 2《Fit for life》
<p> 3．<span word="in">in</span> <span word="case">case</span>引导从句的区别 <span word="in">in</span> <span word="case">case</span>既可引导目的状语从句，也可引导条件状语从句，主要视句意而定： <span word="In">In</span> <span word="case">case</span> <span word="he">he</span> <span word="comes">comes</span>, <span word="let">let</span> <span word="me">me</span> <span word="know">know</span>.(条件状语从句) 如果他来，告诉我一声。 <span word="Tell">Tell</span> <span word="me">me</span> <span word="in">in</span> <span word="case">case</span> <span word="you">you</span> <span word="get">get</span> <span word="into">into</span> <span word="difficulty">difficulty</span>.(目的状语从句) 遇到困难请告诉我。 <span word="in">in</span> <span word="case">case</span>引导目的状语从句，从句有时可用“<span word="should">should</span>＋动词原形”这样的形式： <span word="Take">Take</span> <span word="your">your</span> <span word="coat">coat</span> <span word="in">in</span> <span word="case">case</span> <span word="it">it</span> <span word="rains">rains</span> (<span word="should">should</span> <span word="rain">rain</span>)． 带着雨衣以防下雨。 五、条件状语从句 1．引导条件状语从句的从属连词 (1)主要的有<span word="if">if</span>, <span word="unless">unless</span>, <span word="as">as</span> (<span word="so">so</span>) <span word="long">long</span> <span word="as">as</span>等。 <span word="You">You</span> <span word="can">can</span> <span word="leave">leave</span> <span word="now">now</span> <span word="if">if</span> <span word="you">you</span> <span word="like">like</span>. 如果你愿意现在就可以走了。 <span word="As">As</span> <span word="long">long</span> <span word="as">as</span> <span word="it">it</span> <span word="doesn">doesn</span>'<span word="t">t</span> <span word="rain">rain</span> <span word="we">we</span> <span word="can">can</span> <span word="go">go</span>. 只要不下雨，我们就可以去。 (2)除以上基本的引导条件状语从句的从属连词外，还有的动词尤其是其分词形式(如<span word="suppose">suppose</span>, <span word="supposing">supposing</span>, <span word="provided">provided</span>, <span word="providing">providing</span>等)和介词短语(如<span word="in">in</span> <span word="case">case</span>, <span word="on">on</span> <span word="condition">condition</span> <span word="that">that</span>等)也可用作连词表示条件。 <span word="I">I</span> <span word="will">will</span> <span word="come">come</span> <span word="on">on</span> <span word="condition">condition</span> (<span word="that">that</span>) <span word="she">she</span> <span word="is">is</span> <span word="invited">invited</span> <span word="too">too</span>. 如果邀请她来， 那我就来。 <span word="He">He</span> <span word="may">may</span> <span word="go">go</span> <span word="with">with</span> <span word="us">us</span> <span word="provided">provided</span> (<span word="providing">providing</span>) <span word="he">he</span> <span word="arrives">arrives</span> <span word="in">in</span> <span word="time">time</span>.</p><p> 他若及时到，就可以和我们一起走。 <span word="suppose">suppose</span>和<span word="supposing">supposing</span>引导条件状语从句时，通常用于主句为疑问句的场合： <span word="Suppose">Suppose</span> <span word="the">the</span> <span word="boss">boss</span> <span word="saw">saw</span> <span word="you">you</span>，<span word="what">what</span> <span word="would">would</span> <span word="he">he</span> <span word="say">say</span>? 如果老板看到你，他会怎样说？ <span word="Supposing">Supposing</span> <span word="he">he</span> <span word="does">does</span> <span word="not">not</span> <span word="come">come</span>, <span word="shall">shall</span> <span word="we">we</span> <span word="go">go</span> <span word="without">without</span> <span word="him">him</span>? 他若不来，是不是不带他去？ 2．条件状语从句的时态 当主句为将来时态或具有将来意义时，条件状语从句通常要用一般现在时表示将来意义，而不能直接使用将来时态。 六、时间状语从句(两个方面) 1．引导时间状语从句的从属连词 引导时间状语从句的从属连词很多，如较基本的有<span word="before">before</span>, <span word="after">after</span>, <span word="when">when</span>, <span word="while">while</span>, <span word="as">as</span>, <span word="since">since</span>, <span word="till">till</span>, <span word="until">until</span>, <span word="as">as</span> <span word="soon">soon</span> <span word="as">as</span> 等。 <span word="Things">Things</span> <span word="were">were</span> <span word="different">different</span> <span word="when">when</span> <span word="I">I</span> <span word="was">was</span> <span word="a">a</span> <span word="child">child</span>. 我小时候情况与现在不同。 <span word="We">We</span> <span word="must">must</span> <span word="strike">strike</span> <span word="while">while</span> <span word="the">the</span> <span word="iron">iron</span> <span word="is">is</span> <span word="hot">hot</span>. 我们要趁热打铁。 <span word="It">It</span>'<span word="s">s</span> <span word="a">a</span> <span word="long">long</span> <span word="time">time</span> <span word="since">since</span> <span word="I">I</span> <span word="met">met</span> <span word="you">you</span> <span word="last">last</span>. 从上次见到你，已有很长时间了。 除以上基本的引导时间状语从句的从属连词外，还有些本来不是从属连词却可用作从属连词的词：</p>
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