用英语问原因How to ask for reasons in English?找一些特定的短语如：why? why d

用于问原因的：
Why did you think so?
Could you tell me why you prefer to live in the country?
What makes you think so?
Why was that?
Why didn’t you go to the book-sale last Friday?
Why is life more peaceful in rural areas?
Do you know why he has turned down their proposal?
How come you are late so often?
Is that why you’re disappointed?
用以给出原因的：
I can’t come to the party.
I must prepare for my exam tomorrow. 
Well, I’d love to, but actually I can’t make it.
I’ve got a lot of homework to do. 
One reason is that…… 
And another reason is that…... 
Because, you know, I don’t know how they actually felt. 
My point is that…… 
The main reason was that…… 
Due to the …… 
My reason for asking this question is…… 
Just because…

我不能帮你~但我想指出,*how to ask for reasons in english?* 不是一个句子, 人们通常会说:how do you ask.........?

how come?
what makes u say so?

只记得到
why=what...for(=how cone~这个我不大确定)了
同时具体的事例总要给个吧
比如问路的
为原因的~等~