如果是一般现在时,第一人称变为第三人称单数时：
1 be 动词中的am要改为is ， 如 I am a student . -> He/ She is a student .
have 改为has , 如 I have a pen . -> He / She has a pen .
2 实义动词作谓语时，变第三人称单数时谓语动词要加s / es，动词第三人称单数的变化规则是：
1）一般在词尾加s，如 open - opens
2)以s ,x ,ch ,sh ,o 结尾时，直接 在后面中es ，如 pass - passes ; fix - fixes ; watch - watches ; wash - washes , do - does
3)以辅音字母加y 结尾时，变y 为i 再加es，如 carry - carries
例句：
1） I go to school on foot . -> He goes to school on foot .
2) I help Jim clean the windows . -> She helps Jim clean the windows.
3) I do my homework in the evening.-> He does his homework in the evening .
如果是一般过去时，实义动词作谓语时都是用过去时（不受人称和数的影响）如
I did my homework just now.
He did his homework just now .
一般加s，y结尾若前是辅音字母去y加ies是元音字母加s 。
f(fe)结尾若前是辅音字母去f(fe)加ves元音字母加s 。
ch,sh,tch结尾加es，其他还有不规则的变化。
例如：
I go to school.
------第三人称：He/She goes to school.
二、第一人称复数 we（“我们”） ------第三人称复数they（“他们”）
例如：
We love the school.
------第三人称：They love the school.
三、1, She asked me to pick her up at 8.
2, William asked Lucy to wait outside the school.
3, I asked her to email me some time next week.
4, She asked them to turn the music down.
5, He told us to be ready at 6:30.
6, He asked them not to turn off the TV.
2, William asked Lucy to wait outside the school.
3, I asked her to email me some time next week.
4, She asked them to turn the music down.
5, He told us to be ready at 6:30.
6, He asked them not to turn off the TV.本回答被网友采纳
应该是这样吧？！
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