［特殊词精讲］begin（start） doing/to do
<p> <span word="begin">begin</span> / <span word="start">start</span> <span word="to">to</span> <span word="do">do</span> <span word="sth">sth</span> /<span word="begin">begin</span> / <span word="start">start</span> <span word="doing">doing</span> <span word="sth">sth</span>.</p><p> 1） 谈及一项长期活动或开始一种习惯时，使用<span word="doing">doing</span>.例如：</p><p> <span word="How">How</span> <span word="old">old</span> <span word="were">were</span> <span word="you">you</span> <span word="when">when</span> <span word="you">you</span> <span word="first">first</span> <span word="started">started</span> <span word="playing">playing</span> <span word="the">the</span> <span word="piano">piano</span>？ 你几岁时开始弹钢琴？</p><p> 2） <span word="begin">begin</span>， <span word="start">start</span>用进行时时，后面动词用不定式<span word="to">to</span> <span word="do">do</span>.例如：</p><p> <span word="I">I</span> <span word="was">was</span> <span word="beginning">beginning</span> <span word="to">to</span> <span word="get">get</span> <span word="angry">angry</span>.我开始生起气来。</p><p> 3） 在<span word="attempt">attempt</span>， <span word="intend">intend</span>， <span word="begin">begin</span>， <span word="start">start</span> 后接<span word="know">know</span>， <span word="understand">understand</span>， <span word="realize">realize</span>这类动词时，常用不定式<span word="to">to</span> <span word="do">do</span>.例如：</p><p> <span word="I">I</span> <span word="begin">begin</span> <span word="to">to</span> <span word="understand">understand</span> <span word="the">the</span> <span word="truth">truth</span>.我开始明白真相。</p><p> 4） 事物作主语时。例如：</p><p> <span word="The">The</span> <span word="snow">snow</span> <span word="began">began</span> <span word="to">to</span> <span word="melt">melt</span>.雪开始融化了</p><p> </p>
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