You use very with certain nouns in order to specify an extreme position or extreme point in time.
At the very back of the yard was a wooden shack.
在院子的最后面是一间小木屋。
I turned to the very end of the book, to read the final words.
我翻到书的最后面,读了最后的那些话。
You use very with nouns to emphasize that something is exactly the right one or exactly the same one.
Everybody says he is the very man for the case.
人人都说他是接手这件案子的最佳人选。
You use very with nouns to emphasize the importance or seriousness of what you are saying.
At one stage his very life was in danger.
他的生命曾一度处于危险之中。
History is taking place before your very eyes.
历史就在你的眼前发生着。
Very is used to give emphasis to an adjective or adverb.
The problem and the answer are very simple.
问题和答案都很简单。
I'm very sorry.
我很抱歉。
They are getting the hang of it very quickly.
他们会很快地掌握了窍门。
You use very to give emphasis to a superlative adjective or adverb. For example, if you say that something is the very best, you are emphasizing that it is the best.
They will be helped by the very latest in navigation aids.
他们将受益于最新的导航系统。
I am feeling in the very best of spirits.
我感觉自己的精神状态绝佳。
very well
Very well is used to say that you agree to do something or you accept someone's answer, even though you might not be completely satisfied with it.
'We need proof, sir.' Another pause. Then, 'Very well.'
“我们需要证据,先生。” 又顿了一下。然后说道,“好吧。”
not very
Not very is used with an adjective or adverb to say that something is not at all true, or that it is true only to a small degree.
She's not very impressed with them.
她对他们没有什么印象。
'How well do you know her?'—'Not very.'
“你对她有多了解?” “不是很多。”
very much so
The expression very much so is an emphatic way of answering 'yes' to something or saying that it is true or correct.
'Are you enjoying your holiday?'—'Very much so.'
“你假期过得愉快吗?” “非常愉快。”
cannot very well do
If you say that you cannot very well do something, you mean that it would not be right or possible to do it.
I said yes. I can't very well say no under the circumstances.
我答应了。在当时那种情形下我不可能不答应。