状语从句知识点总结：It be…since /before /when…从句归纳
<p>【导语】英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了英语语法大全，希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。</p><p>1. <span word="It">It</span> <span word="be">be</span> +时间段+<span word="since">since</span>表示自从以来有多久了，但若从句谓语是延续性动词时，则意为(多久) 不做了。</p><p>2. <span word="It">It</span> <span word="be">be</span>+时间段+<span word="before">before</span>表示过之后才，若<span word="be">be</span>是否定式，则表示没过就。</p><p>3. <span word="It">It</span> <span word="be">be</span> +时间点+<span word="before">before</span>表示在之前，时间是。</p><p>4. <span word="It">It</span> <span word="be">be</span> +时间点+<span word="when">when</span>表示当时，时间是。</p><p><span word="It">It</span> <span word="is">is</span> <span word="three">three</span> <span word="years">years</span> <span word="since">since</span> <span word="I">I</span> <span word="joined">joined</span> <span word="the">the</span> <span word="Party">Party</span>. 我入党有三年了。</p><p><span word="It">It</span> <span word="is">is</span> <span word="three">three</span> <span word="years">years</span> <span word="since">since</span> <span word="he">he</span> <span word="lived">lived</span> <span word="here">here</span>. 他不住这里有三年了。</p><p><span word="It">It</span> <span word="will">will</span> <span word="be">be</span> <span word="years">years</span> <span word="before">before</span> <span word="we">we</span> <span word="meet">meet</span> <span word="again">again</span>. 要过几年之后我们才能重相聚。</p><p><span word="It">It</span> <span word="was">was</span> <span word="not">not</span> <span word="long">long</span> <span word="before">before</span> <span word="he">he</span> <span word="came">came</span> <span word="back">back</span>. 没过多久他就回来了。</p><p><span word="It">It</span> <span word="was">was</span> <span word="evening">evening</span> <span word="before">before</span> <span word="they">they</span> <span word="got">got</span> <span word="here">here</span>. 他们到达这里之前就已天夜了。</p><p><span word="It">It</span> <span word="was">was</span> <span word="five">five</span> <span word="oclock">oclock</span> <span word="when">when</span> <span word="he">he</span> <span word="got">got</span> <span word="home">home</span>. 他回到家时已是五点了。(比较强调结构：<span word="It">It</span> <span word="was">was</span> <span word="at">at</span> <span word="five">five</span> <span word="oclock">oclock</span> <span word="that">that</span> <span word="he">he</span> <span word="got">got</span> <span word="home">home</span>. )</p>
页:
[1]