英语造句如何用BE动词和助动词？

Question

我有的时候造句分不清到底是用do、does的助动词还是用be动词。例如：

What you have said ____ not ____ to what we are concerned with now?(第二个空用relate的什么形式？这个题其实是一个选词填空。)

Answer 1

What you have said does not relate to what we are concerned with now. (注：原题的标点符号有误）

英语中，改否定句或疑问句时，应该注意用好be动词、情态动词、助动词。规律是：先找be、情、助，无则“都打的（do, does, did）”。

即：1、如果原句中有be动词、情态动词或者助动词，就以相应的be、情、助为准。例如：
(1)He is at home. （有be动词）
He isn't at home.
Is he at home?
(2)I can work it out.(有情态动词)
I can't work it out.
Can you work it out?
(3)He has been there three times.(有助动词)
He hasn't been there three times.
Has he been there three times?
2.如果原句只有行为动词，那就要借助于助动词do,did或者did。例如:
（1）My grandpa lives in a villige.(注意动词还原)
My grandpa doesn't live in a villige.
Does your grandpa live in a villige.
（2）They had a good time there.(注意动词还原)
They didn't have a good time there.
Did they have a good time there?
(3) We work six hours a day.
We don't work six hours a day.
Do you work six hours a day?
您的这个句子的主语是What you have said ，即一个主语从句，从句子中我们知道谓语部分要用一般现在时态，故谓语动词要用现单三形式。

不知这样解释可否？

Answer 2

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