enjoy变为第三人称单数形式 为什么不能变为enjoies 而要变为enjoys

enjoy变为第三人称单数形式 为什么不能变为enjoies 而要变为enjoys

因为enjoy不是辅音字母加y结尾
而是元音字母加y结尾
所以不能把y改为i再加es

区别
study第三人称单数是 studies

2. Mary ___A__ on shoes when she ____ them.(第三人称单数） A. tries…buys B. tries… buies C. trys… buys D. trys… buies 3. The girl often ____B__ cold when she ______.（以ch结尾单数加es） A. cathcs…dances B. catches… dances C. catchs…dancees D. catches… dancee, 4. ____D_ he ____ himself there? No, I don't think so. 第三人称用助动词does,助动词后用动词原形 A. Do…enjoy B. Does… enjoies C. Does… enjoys D. Does…enjoy 5. _B__ your teacher ____ from them very often? Certainly.收信用hear from第三人称用助动词does,助动词后用动词原形 A. Do…hear B. Does…hear C. Do… receive D. receive 6. ____C_ your mother _____ some cleaning on Sundays?your mother 为第三人称第三人称用助动词does,助动词后用动词原形 A. Does…does B. Do…does C. Does…do D. Do… do 7. ___D__ Tom _____to work hard to help his family ? Yes, he _____.第三人称用助动词does,助动词后用动词原形 A. Has… x…does B. Has…x…does C. Does…has…has D. Does… have…does 8. Which teacher _B____ lessons to you every day ?第三人称用助动词does,助动词后用动词原形 A. does …gives B. does… give C. do… give D. gives 9. Smith does not go fishing on weekdays, _D___? _____ , he does. A. does he…No B. does he…Yes C. doesn’t he…No D. doesn’t he…Yes 10.Mr Black often ___A__ fishing on Sundays, _____ he ?第三人称用单数go加es，前面否定，后面肯定 A. goes…doesn’t B. goes…isn’t C. doesn’t go…does D. doesn’t go…is追问那wash的第三人称单数形式是什么？那wash的第三人称单数形式是什么？

因为是元音o加y结尾的，是一般性的，直接加s
辅音加y结尾，才变y为i加es. 如study

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