关于“英语单词”在什么情况下单词后面要加s？ 英语：在什么情况下单词后面加s，在什么情况下加es
\u5173\u4e8e\u201c\u82f1\u8bed\u5355\u8bcd\u201d\u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b\u5355\u8bcd\u540e\u9762\u8981\u52a0s\u3002\u5f53\u4e3b\u8bed\u662f\u5355\u6570\u7b2c3\u4eba\u79f0\u65f6,\u52a8\u8bcd\u52a0s
\u6bd4\u5982He reads book.
\u5f53\u52a8\u8bcd\u4ee5s,es,th,sh,o\u7ed3\u5c3e\u65f6\uff0c\u52a8\u8bcd\u5e94\u52a0es
\u6bd4\u5982He goes too fast.
\u5f53\u53e5\u5b50\u662f\u73b0\u5728\u8fdb\u884c\u65f6\u65f6,\u52a8\u8bcd\u52a0ing
\u5982\uff1aHe is reading book. \u3011
\u7b2c\u4e09\u4eba\u79f0\u5355\u6570\u540e\u9762\u52a8\u8bcd\u8981\u52a0s,\u52a8\u8bcd\u7ed3\u5c3e\u662fch,sh,x,s\u7684\u65f6\u5019\u52a0es\uff0c\u6bd4\u5982
"reach"\u5c31\u52a0es\u53d8\u4e3a"reaches"\u3002\u8fd8\u6709\u4e00\u4e9b\u4e0d\u89c4\u5219\u7684\u52a8\u8bcd\uff0c\u5c31\u4e0d\u4e00\u4e00\u5217\u4e3e\u4e86\u3002
\u4f8b\u53e5\uff1a
I read a book.
He reads a book. \u5c31\u662f\u8fd9\u4e2a\u533a\u522b\u3002
\u5728be\u52a8\u8bcd\u540e\u9762\u8981\u52a0ing\uff0c\u8fd8\u6709\u4e00\u4e9b\u5176\u5b83\u7684\u89c4\u5f8b\u3002
\u4f8b\u53e5\uff1a
I am reading.
He is reading.\u8fd9\u65f6\u5019\u7b2c\u4e09\u4eba\u79f0\u5355\u6570\u6ca1\u6709\u533a\u522b\u3002
\u5176\u5b83\u7684\u4e00\u4e9b\u89c4\u5f8b\uff1a
I see a boy reading a book.
I finish reading the book.
I like reading.
\u7b2c\u4e09\u4eba\u79f0\u4e00\u822c\u73b0\u5728\u65f6\u7528S\u5427
es\u4e00\u822cch,sh,x,s\u662f\u4ee5es\u4f5c\u540d\u8bcd\u590d\u6570\uff0c\u52a8\u8bcd\u7684\u8bdd\u8981\u6839\u636e\u52a8\u8bcd\u6700\u540e\u97f3\u8c03\u5224\u65ad\uff0c\u5982\u679c\u662f\u8f85\u97f3\u4e00\u822c\u4e0d\u7528\uff0c\u5982\u679c\u662f\u52a9\u97f3\u7528es\u4e0d\u8fc7\u4e5f\u6709\u4f8b\u5916\u7684\uff5e
ing\u5f62\u5f0f\u662f\u52a8\u8bcd\u53d8\u52a8\u540d\u8bcd\u7528
Ex:He likes reading.
\u6216\u8005\u73b0\u5728\u65f6\u4f7f\u7528
EX:He was reading the book when i came in.
\u52a8\u8bcd+S/ES:\u5728\u4e3b\u8bed\u662f\u7b2c\u4e09\u4eba\u79f0\u5355\u6570\u7684\u60c5\u51b5\u4e0b
\u52a8\u8bcd+ing: 1:\u5728\u8fdb\u884c\u65f6\u6001\u4e2d be+Ving
2:\u505a\u540d\u8bcd\u7528\u65f6 \u5e38\u51fa\u73b0\u4e8e\u4ecb\u8bcd\u540e
1\u3001 \u4e00\u822c\u60c5\u51b5\u4e0b\u52a0s\uff1b\u5f53\u8fd9\u4e2a\u5355\u8bcd\u4ee5s,x,sh,ch\u7ed3\u5c3e\u7684\u65f6\u5019\u52a0\u4e0aes,\u4f46stomach\u7684\u590d\u6570\u5f62\u5f0f\u662fstomachs\uff1b
2\u3001\u51e1\u662f\u4ee5s\u3001z\u3001x\u3001ch\u3001sh\u7ed3\u5c3e\u7684\u8bcd,\u5728\u8be5\u8bcd\u672b\u5c3e\u52a0\u4e0a\u540e\u8f8d-es\u6784\u6210\u590d\u6570\uff1b
3\u3001\u4ee5\u8f85\u97f3\u5b57\u6bcd+y\u7ed3\u5c3e\u7684\u540d\u8bcd,\u5c06y\u6539\u53d8\u4e3ai,\u518d\u52a0-es\uff1b
4\u3001\u4ee5-o\u7ed3\u5c3e\u7684\u540d\u8bcd,\u5982\u679c\u4e0d\u662f\u5916\u6765\u8bcd\u6216\u7f29\u5199,\u5c31\u52a0-es,\u5426\u5219\u52a0-s\u6784\u6210\u590d\u6570\uff1b
5\u3001\u4ee5-is\u7ed3\u5c3e\u7684\u540d\u8bcd,\u901a\u5e38\u5c06-is\u6539\u53d8\u4e3a-es\uff1b
6\u3001\u4ee5-ix\u7ed3\u5c3e\u7684\u540d\u8bcd,\u901a\u5e38\u5c06-ix\u6539\u53d8\u4e3a-ices\u3002
1. 解答: 英语单词词尾添加–s的情况有两种，一是可数名词由单数变为复数，二是动词由原形变为三单形式。
2. 拓展（1）：英语名词分为可数名词与不可数名词，其中可数名词有单复数之分。当可数名词数量超过数量“1”时，就用复数形式，一般在词尾加-s或-es，比如apple - apples, box - boxes等等。当然可数名词单数变复数的具体规则比较复杂，具体可以查阅语法书。例句如下：① There are some potatoes and tomatoes on the table. 餐桌上有一些土豆和西红柿。② How many penicl boxes do you have? Only one. 你有多少个文具盒？只有一个。
3. 拓展（2）：一般现在时是英语常见的时态之一，表示现阶段经常、反复发生的动作或进行的活动。一般情况下，句子的谓语动词使用动词原形形式，但在句子主语为he，she，it或与之相当的名词时，谓语动词必须用三单形式，即在谓语动词词尾添加词尾-s或-es，指示这种谓语动词与主语在人称与数的语法范畴上的配合规律。仅举一律说明：① I often go to work on foot. 我常常步行上班。② She always goes to work by car. 她总是驾车去上班。
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