英语一般疑问句和否定句怎么改？

Answer 1

变一般疑问句时，首先看下有无be动词（am,is,are），如有就直接把be动词提前放句首，若无be动词就看有无情态动词(would, can,could等的词)，也是直接把情态动词提前，要是还没有就看动词，但是要借助助动词do或does来提问，记得最后面加问号
例：
He is an American. 变一般疑问句就把is提前到句首，其他成分不变，为 Is he an American?
My father will visit Beijing next week. 变一般疑问句也是把情态动词will提前，其他成分不变，为 Will your father visit Beijng next week?
I like playing basketball. 因 I 为非第三人称，故要借助do，改为：Do you like playing basketball?
She likes playing Basketball. 因She为第三人称，故要借助does，动词likes要还原like，改为：Does she like playing basketball?

变否定句:也是先看be动词，若无就看情态动词，都是直接在后面加not，如没be动词或情态动词就看动词，借助助动词do或does
例：
He is an American. 变一般否定句直接在is后加not，其他成分不变，为 He is not an American.
My father will visit Beijing next week. 变一般否定句直接在will后加not，其他成分不变，为 My father will not visit Beijng next week.
I like playing basketball. I 为非第三人称，故要借助do后加not，改为：I don't like playing basketball.
She likes playing Basketball.She为第三人称，故要借助does，后加not，动词likes要还原like，改为：She does not like playing basketball?
希望对你有用，不明白再问吧

Answer 2

一般疑问句就是be动词、系动词提前、没有的用助动词、变否定、be动词、系动词后加not、没有的一样用助动词加not

Answer 3

一般疑问句
若谓语是be动词或情态动词时，be动词、情态动词提前
eg:She is a student. Is she a student?
He can do it. Can he do it?
若谓语实义动词时，则要借助助动词,且实义动词要变成原型
eg:He jumps high. Does he jump high?
否定
be动词情态动词后加not I can not find him.
实义动词借助助动词加not He doesn't care about you.

希望采纳哈 这里只是一般现在时时态 还有各种别的时态