摘要：①.一般情况加-s, 如: works, learns, comes ②.动词以-s, -x, -sh, -ch, -o结尾时, 加-es, 如: passes, fixes, washes, teaches, goes ③.动词以辅音字母加y结尾时, 将y变为i, 再加-es, 如: carries, cries, flies, studies

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