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> </p><p> <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>. </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>? </p><p> 你几岁时开始弹钢琴？ <span word="http">http</span>://<span word="yingyu">yingyu</span>.<span word="chazidian">chazidian</span>.<span word="com">com</span></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> </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>。 </p><p> 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>。 </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>。 </p><p> 我开始明白真相。 </p><p>4) 物作主语时 </p><p> <span word="It">It</span> <span word="began">began</span> <span word="to">to</span> <span word="melt">melt</span>. </p></p>
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