but,however,and的英文用法,急!

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/07/08 07:39:15

but,however,and的英文用法,急!
but,however可否用在句首?
比如说（大侠们顺便看看有没有语法错误）:
There used to be someone to whom I could love.There used to be someone to whom I could buy posies for. There used to be someone to whom I could ask,"do you love me?"(在这里可否用And?)I'm sure that the answer would be yes.（这里可否用But?）Now there is no one, no one at all.
THX!

There used to be someone who I could have loved.
There used to be someone who I could have bought posies for.
There used to be someone who I could have asked 'Do you love me?'
I'm pretty sure that the answer would have been 'yes,I do' .
However / But now there is no one,no one at all.
But/However都表示转折,可以互换,However语气强一些.
用could have done形式表达更好一些,表示原本能够去做,但是实际上没有做.

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