作业帮英语改一般疑问句的做法?还有改否定句的做法有过去式，
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英语改一般疑问句的做法?还有改否定句的做法
有过去式，
一般疑问句是疑问句的一种.它是指用yes（是）或no（否）来回答的句子.其结构是：系动词be/助动词/情态动词＋主语＋其他成分?通常回答为：肯定：Yes,+主语+提问的助动词.否定：No,+主语+提问的助动词+not.
如:Are you from Japan?Yes I am． ／ No I'm not．
Is her sister doing her homework now?Yes she is． ／ No she isn't．
Does he work in a bank?Yes he does． ／ No he doesn't．
Do you live near your school?Yes I do． ／ No I don't．
Can you speak French?Yes I can． ／ No I can't．
May I go home now?Yes you may． ／ No you mustn't．
英语语法中否定句分为九种：
（1）一般否定句
I don't know this.否定句式
No news is good news.否定词no
There is no person smoking here.
（2)特指否定
He went to his office,not to see him.
I am sorry for not coming on time.
I don't think/believe/suppose/feel/imagine you are right.
（3)部分否定
All the answers are not right
All is not gold that glitters.
I don't know all of them.
I can't see everybody/everything.
Both of them are not right.
（4)全体否定
None of my friends smoke.
I can see nothing/nobody.
Neither of them is right.
Nothing can be so simple as this.
（5) 延续否定
You didn't see him,neither/nor did I.
You don't know,I don't know either.
He doesn't know English,let alone/to say nothing of/not to speak of (更不用说） French.
（6) 半否定句
We seldom/hardly/scarcely/barely hear such fine singing.
I know little English.I saw few people.
（7) 双重否定
You can't make something out of nothing.
What's done cannot be undone.
There is no sweet without sweat.
No gain without pains.
I can't help /keep/ laughing whenever I hear it.
No man is so old but (that) he can learn.
（8)排除否定
Everyone is ready except you.
He did nothing but play.
But for your help,I couldn't do it.
（9)加强否定
I won't do it at all.
I can't see it any more.
有系动词，把系动词提前。
动词。用DO/DOES 提问，后面动词要变原型。
有系动词，在系动词后面+not，没有就加助动词DO/DOES+NOT 后面动词要变原型