动词三单构成

1.一般在动词后加s

like -> likes

run -> runs

2.以s, x, sh, ch 结尾的动词结尾加es 读[ɪz]

teach -> teaches  wash -> washes 

3.以辅音字母加y结尾的动词,把y变i再加es,读[z]

cry -> cries    fly -> flies

4.结尾是o的动词原形加es 

do -> does    go -> goes

5 have -> has