动词如何变三单?请举例说明.

问题描述:

动词如何变三单?请举例说明.

所谓变三单:就是指不定词,过去式,过去分词
例 如: Be Was Been

三单指
he she it 或者 名字等
he takes her to play football
she watches a movie with her mom
Jim goes to library

所谓动词的三单,即指动词的第三人称单数形式.
当主语是每三人称单数时,谓语动词要用相应的三单
形式.规则同名词变复数
1.直接在词的末尾加s,reads,sits,stands
2.以s,x,sh,ch结尾的在词尾加es,watches,brushes
3.以o 结尾的加es ,go-goes ,do -does
4.以辅音字母加y结尾的,变y 为i 再加es ,fly -flies
5.以f, fe 结尾的将f ,fe 变v 再加es ,roof -rooves