一个句子的开头单词什么时候用原形，什么时候用to+原形，什么时候用动名词 在英语中开头的一个动词，什么时候用doing的形式，什么时候...
\u4f4d\u4e8e\u53e5\u9996\u7684\u52a8\u8bcd\u4ec0\u4e48\u65f6\u5019\u7528\u52a8\u8bcd\u539f\u5f62\u6216\u662fto+\u52a8\u8bcd\u539f\u5f62\u6216\u662f\u52a8\u540d\u8bcd\u5f62\u5f0f\uff1f?\u52a8\u8bcd\u539f\u5f62\u653e\u5728\u53e5\u9996\u53eb\u7948\u4f7f\u53e5,\u4e5f\u53ea\u6709\u7948\u4f7f\u53e5\u7684\u65f6\u5019,\u624d\u662f\u52a8\u8bcd\u539f\u5f62\u653e\u53e5\u9996,\u81f3\u4e8e\u7406\u89e3,\u4f60\u53ef\u4ee5\u7406\u89e3\u7701\u7565\u4e86\u4e3b\u8bedYOU
\u800cto\uff0b\u52a8\u8bcd\u539f\u5f62\u548c\u52a8\u540d\u8bcd\u90fd\u662f\u8868\u793a\u4e00\u4e2a\u52a8\u4f5c\u600e\u4e48\u6837,\u6bd4\u5982:Studying English is important.=To study English is important.
\u4f46\u662f,\u8981\u6ce8\u610f\u4e00\u70b9,to\uff0b\u52a8\u8bcd\u539f\u5f62\u653e\u53e5\u9996\u7684\u60c5\u51b5\u975e\u5e38\u5c11\u89c1,\u56e0\u4e3a\u8fd9\u6837\u7684\u53e5\u5b50\u5c5e\u4e8e\u5934\u91cd\u811a\u8f7b,\u6216\u8005\u8bf4\u4e3b\u8bed\u592a\u957f\u4e86,\u5728\u82f1\u8bed\u91cc\u9762,\u8fd9\u6837\u7684\u53e5\u5b50\u663e\u5f97\u4e0d\u7f8e\u89c2,\u6240\u4ee5\u4e3a\u4e86\u907f\u514d\u5934\u91cd\u811a\u8f7b\u7684\u51fa\u73b0,to\uff0b\u52a8\u8bcd\u539f\u5f62\u4e00\u822c\u90fd\u653e\u5728\u540e\u9762,\u53d6\u800c\u4ee3\u4e4b\u7684\u5219\u662f\u5f62\u5f0f\u4e3b\u8bedIt\u5982:
It is important to study English.
\u7528doing\u5f00\u5934\u7684\u5e94\u8be5\u662f\u52a8\u540d\u8bcd\u4f5c\u4e3b\u8bed\u3002\u4f8b\u5982
Seeing the film, I moved to tears.
\u7528to do \u5f00\u5934\u7684\u662f\u4e0d\u5b9a\u5f0f\u4f5c\u4e3b\u8bed\uff0c\u5982\uff1a
To become a doctor is my dream.
\u7528ed\u5f00\u5934\u7684\u662f\u8fc7\u53bb\u5206\u8bcd\u4f5c\u5224\u968f\u72b6\u8bed\u7684\u3002\u5982\uff1a
Tied her husband,she went into the kitchen.
当这句话是描述你要做的这件事情的时候用动名词形式:Swimming is easy to learn（描述学游泳这件事情）
当作为一个目的的时候一般用to+动词原形:To learn swimming is not easy，要做某事如何如何
可能第二个和第三个只是意思有少许不同，但在一般情况下两者可以互换，也就是第三句和第二句的开头动词既可以用to+原型（这个叫不定式）也可以用动名词
如果句子以动词原形开头，那么就是祈使句的表达方式，想要告诫 要求某人做某事。
比如简单的一句： Work Hard! 可以表示让某人努力工作一点
to+动词原形 或是动名词开头 有的时候区别不大
如： To work hard/ Working hard is a way to achieve success. 都可以看做是名词的形式
to do sth 会给人一种将来时的感觉 反正遇到具体问题的时候你可以再来咨询哦
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绛旓細鍘熷瀷 绁堜娇鍙 灏辨槸鏈夊懡浠ょ殑璇彞Close the door pleaseTo do 琛ㄧず鐩殑To fininsh the work on time,he studied till 11 pmDoing 浣滀富璇櫎浜嗕互涓婁袱绉嶆儏鍐 灏辩敤Watering flower every morning has been one of my habits
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