实义动词怎样变疑问句和否定句

1 变一般疑问句时将助动词does/do/did提到句首,时态、语态的变化军再次出现时，实义动词变为原型。
eg：do you want some coffee?
2。便特殊疑问句时将助动词does/do/did提到特殊疑问词后，实义动词变为原型。
eg:what color do you like best?
3 变否定句时在实义动词前加doesn't/don't/didn't，实义动词变为原型。
eg: he doesn't like yellow.

加助动词 do (根据句子情况可变化：第三人称单数用does, 过去式 用 did)
例 实意动词 go
I go to school.
疑问 Do you go to school?
否定 I do not (或 don't) go to school.

要根据具体情况，我以实义动词work 为例。
they work in a hospital.一般现在时，动词用原形情况，加用助动词do.
they don't work in a hospital.
do they work in a hospital ?
they worked in a hospital.一般过去时，加助动词did.
they didn't work in a hospital.
did they work in a hospital?
he works in a hospital.一般现在时，动词为三人称单数时加助动词does
he doesn't work in a hospital.
does he work in a hospital ?

变疑问句的：
①在句首加do或does，动词还原。
②第一人称改为第二人称。
③回答时句首是do回答就用do，句首是does，回答就用does。
变否定句的：
在实义动词前加don't或doesn't,动词还原。
动词的三单形式规则变法
①一般情况直接加s
②以s.x.sh.ch结尾的加es
③以o结尾的加es
④以辅音字母加y结尾的，变y为i加es

借助助动词do,注意人称.例：He likes swimming.
疑问：Does he like swimming?
否定：He does not like swimming.