be good at 后面加动词要加ing吗？为什么？ “be good at”后面加动词要加ing吗？为什么？
good at \u540e\u9762\u8981\u52a0\u52a8\u8bcding\u5f62\u5f0f\u5417\uff1f\uff1f\uff1f\u662f\u7684
\u3000be good at doing sth
at\u662f\u4ecb\u8bcd\uff0c\u6240\u4ee5\u540e\u9762\u8ddf\u52a8\u8bcd\u65f6\uff0c\u8981\u7528ing\u5f62\u5f0f
\u7b2c\u4e00\u65f6\u95f4\u4e3a\u4f60\u89e3\u7b54\uff0c
\u5982\u6709\u5e2e\u52a9\uff0c\u656c\u8bf7\u91c7\u7eb3\uff0c
\u5982\u5bf9\u672c\u9898\u6709\u7591\u95ee\u53ef\u8ffd\u95ee\uff0cGood luck!
\u5e94\u8be5\u8ddf\u52a8\u8bcding\u5f62\u5f0f\u3002
at \u662f\u4ecb\u8bcd\uff0c\u4ecb\u8bcd\u540e\u9762\u8981\u8ddf\u540d\u8bcd\u6216\u52a8\u540d\u8bcd\u5373\u52a8\u8bcd\u7684ing\u5f62\u5f0f
be good at doing sth \u64c5\u957f\u505a\u67d0\u4e8b\u3002
\u4f8b\u5982\uff1aHe is good at swimming. \u4ed6\u64c5\u957f\u6e38\u6cf3\u3002
\u52a8\u8bcd\u7684-ing\u5f62\u5f0f\u4e5f\u662f\u4e00\u79cd\u975e\u8c13\u8bed\u52a8\u8bcd\u3002-ing\u5f62\u5f0f\u4ecd\u4fdd\u7559\u6709\u52a8\u8bcd\u7684\u7279\u5f81\uff0c\u53ef\u4ee5\u5e26\u6709\u5176\u6240\u9700\u8981\u7684\u5bbe\u8bed\u6216\u72b6\u8bed\u800c\u6784\u6210-ing\u77ed\u8bed\u3002
-ing\u7684\u5f62\u5f0f\uff1a-ing\u6709\u4e00\u822c\u5f0f\u548c\u5b8c\u6210\u5f0f\u3002\u53ca\u7269\u52a8\u8bcd\u7684-ing\u8fd8\u6709\u4e3b\u52a8\u8bed\u6001\u548c\u88ab\u52a8\u8bed\u6001\uff0c\u800c\u4e0d\u53ca\u7269\u52a8\u8bcd\u7684-ing\u5219\u6ca1\u6709\u88ab\u52a8\u8bed\u6001\u3002
-ing\u5f62\u5f0f\u7684\u57fa\u672c\u7528\u6cd5\u3002\uff081\uff09\u4f5c\u4e3b\u8bed\uff1aSeeing is believing.\u767e\u95fb\u4e0d\u5982\u4e00\u89c1\u3002Talking is easier than doing. -ing\u4f5c\u4e3b\u8bed\u65f6\uff0c\u5982\u679c\u5176\u7ed3\u6784\u8f83\u957f\uff0c\u53ef\u7528it\u4f5c\u5f62\u5f0f\u4e3b\u8bed\uff0c\u800c\u5c06\u4f5c\u4e3b\u8bed\u7684-ing\u540e\u7f6e\u3002\u5982\uff1aIt isn't much good writing to them again. It's no use waiting here.\uff082\uff09\u4f5c\u8868\u8bed\uff1aHer job is washing and cooking. My hobby is collecting stamps.\uff083\uff09\u4f5c\u5bbe\u8bed\uff1a\u2460\u4f5c\u53ca\u7269\u52a8\u8bcd\u7684\u5bbe\u8bed\u3002She likes drawing very much.\uff1b\u2461\u4f5c\u67d0\u4e9b\u77ed\u8bed\u52a8\u8bcd\u7684\u5bbe\u8bed\u3002\uff084\uff09\u4f5c\u5b9a\u8bed\uff1aThe sleeping child is only five years old. Do you know the man standing at the gate? \u6ce8\uff1a-ing\u5f62\u5f0f\u4f5c\u5b9a\u8bed\u7528\u65f6\uff0c\u5982\u679c-ing\u53ea\u662f\u4e00\u4e2a\u5355\u8bcd\uff0c\u5c31\u4f4d\u4e8e\u5176\u4fee\u9970\u7684\u540d\u8bcd\u4e4b\u524d\uff0c\u5982\u679c\u662f-ing\u77ed\u8bed\uff0c\u5c31\u4f4d\u4e8e\u5176\u4fee\u9970\u7684\u540d\u8bcd\u4e4b\u540e\uff0c-ing\u4f5c\u5b9a\u8bed\u65f6\uff0c\u88ab-ing\u6240\u4fee\u9970\u7684\u540d\u8bcd\u5c31\u662f\u8be5-ing\u7684\u903b\u8f91\u4e3b\u8bed\u3002\u53e6\u5916\uff0c-ing\u4f5c\u5b9a\u8bed\u7528\u65f6\uff0c\u5176\u52a8\u4f5c\u548c\u53e5\u5b50\u8c13\u8bed\u52a8\u8bcd\u6240\u8868\u793a\u7684\u52a8\u4f5c\u662f\u540c\u65f6\u8fdb\u884c\u7684\uff0c\u5982\u679c\u4e0d\u662f\u540c\u65f6\u8fdb\u884c\u7684\uff0c\u5c31\u4e0d\u80fd\u7528-ing\u4f5c\u5b9a\u8bed\uff0c\u8981\u4f7f\u7528\u5b9a\u8bed\u4ece\u53e5\uff0c\u5982\uff1aThe girl who wrote a letter there yesterday can speak English very well.\uff085\uff09\u4f5c\u5bbe\u8bed\u8865\u8db3\u8bed\uff1aWe can see steam rising from the wet clothes. \u6ce8\uff1a\u5f53-ing\u5728\u590d\u5408\u5bbe\u8bed\u4e2d\u4f5c\u5bbe\u8bed\u8865\u8db3\u8bed\u7528\u65f6\uff0c\u53e5\u4e2d\u5bbe\u8bed\u5c31\u662f\u8fd9\u4e2a-ing\u7684\u903b\u8f91\u4e3b\u8bed\uff0c\u53ef\u4ee5\u5e26\u6709\u8fd9\u79cd\u590d\u5408\u5bbe\u8bed\u7684\u52a8\u8bcd\u6709see, watch, hear, observe, feel, find, have, keep\u7b49\u3002\uff086\uff09\u4f5c\u72b6\u8bed\uff1a\u2460\u65f6\u95f4\u72b6\u8bed\uff1aSeeing Tom, I couldn't help thinking of his brother. \u5206\u8bcd\u5728\u53e5\u4e2d\u4f5c\u65f6\u95f4\u72b6\u8bed\u65f6\uff0c\u5176\u524d\u4e00\u822c\u53ef\u52a0when\u6216while\uff0c\u5982\uff1aWhen crossing street, you must be careful. \u2461\u539f\u56e0\u72b6\u8bed\uff1aBeing ill, he didn't go to school yesterday. \u2462\u65b9\u5f0f\u6216\u4f34\u968f\u72b6\u8bed\uff1aMary stood at the school gate waiting for Betty.
应该跟动词ing形式。
at 是介词，介词后面要跟名词或动名词即动词的ing形式
be good at doing sth 擅长做某事。
例如：He is good at swimming. 他擅长游泳。
动词的-ing形式也是一种非谓语动词。-ing形式仍保留有动词的特征，可以带有其所需要的宾语或状语而构成-ing短语。
-ing的形式：-ing有一般式和完成式。及物动词的-ing还有主动语态和被动语态，而不及物动词的-ing则没有被动语态。
-ing形式的基本用法。
（1）作主语：Seeing is believing.百闻不如一见。Talking is easier than doing. -ing作主语时，如果其结构较长，可用it作形式主语，而将作主语的-ing后置。如：It isn't much good writing to them again. It's no use waiting here.
（2）作表语：Her job is washing and cooking. My hobby is collecting stamps.
（3）作宾语：①作及物动词的宾语。She likes drawing very much.；②作某些短语动词的宾语。
（4）作定语：The sleeping child is only five years old. Do you know the man standing at the gate? 注：-ing形式作定语用时，如果-ing只是一个单词，就位于其修饰的名词之前，如果是-ing短语，就位于其修饰的名词之后，-ing作定语时，被-ing所修饰的名词就是该-ing的逻辑主语。另外，-ing作定语用时，其动作和句子谓语动词所表示的动作是同时进行的，如果不是同时进行的，就不能用-ing作定语，要使用定语从句，如：The girl who wrote a letter there yesterday can speak English very well.
（5）作宾语补足语：We can see steam rising from the wet clothes. 注：当-ing在复合宾语中作宾语补足语用时，句中宾语就是这个-ing的逻辑主语，可以带有这种复合宾语的动词有see, watch, hear, observe, feel, find, have, keep等。
（6）作状语：①时间状语：Seeing Tom, I couldn't help thinking of his brother. 分词在句中作时间状语时，其前一般可加when或while，如：When crossing street, you must be careful. ②原因状语：Being ill, he didn't go to school yesterday. ③方式或伴随状语：Mary stood at the school gate waiting for Betty.
应该跟动词ing形式。
at 是介词，介词后面要跟名词或动名词即动词的ing形式
be good at doing sth 擅长做某事。
例如：He is good at swimming. 他擅长游泳。
动词的-ing形式也是一种非谓语动词。-ing形式仍保留有动词的特征，可以带有其所需要的宾语或状语而构成-ing短语。
-ing的形式：-ing有一般式和完成式。及物动词的-ing还有主动语态和被动语态，而不及物动词的-ing则没有被动语态。
-ing形式的基本用法。
（1）作主语：Seeing is believing.百闻不如一见。Talking is easier than doing. -ing作主语时，如果其结构较长，可用it作形式主语，而将作主语的-ing后置。如：It isn't much good writing to them again. It's no use waiting here.
（2）作表语：Her job is washing and cooking. My hobby is collecting stamps.
（3）作宾语：①作及物动词的宾语。She likes drawing very much.；②作某些短语动词的宾语。
（4）作定语：The sleeping child is only five years old. Do you know the man standing at the gate? 注：-ing形式作定语用时，如果-ing只是一个单词，就位于其修饰的名词之前，如果是-ing短语，就位于其修饰的名词之后，-ing作定语时，被-ing所修饰的名词就是该-ing的逻辑主语。另外，-ing作定语用时，其动作和句子谓语动词所表示的动作是同时进行的，如果不是同时进行的，就不能用-ing作定语，要使用定语从句，如：The girl who wrote a letter there yesterday can speak English very well.
（5）作宾语补足语：We can see steam rising from the wet clothes. 注：当-ing在复合宾语中作宾语补足语用时，句中宾语就是这个-ing的逻辑主语，可以带有这种复合宾语的动词有see, watch, hear, observe, feel, find, have, keep等。
（6）作状语：①时间状语：Seeing Tom, I couldn't help thinking of his brother. 分词在句中作时间状语时，其前一般可加when或while，如：When crossing street, you must be careful. ②原因状语：Being ill, he didn't go to school yesterday. ③方式或伴随状语：Mary stood at the school gate waiting for Betty.
因为at是介词，介词后的动词需要加ing。be good at doing sth.善于做某事
因为at是介词 介词要加动词ing的形式
at 是介词。介词后面要跟名词或动名词。也就是动词的ing形式。所以应该跟动词ing 形式。
