extremely和very区别
adv. 非常，极其；极端地；
very adv. 非常，很；完全；
两个单词的词义都很类似，区别在于extremely比very的程度更深。
This species is extremely rare.
这一物种极为罕见。
I found her extremely irritating.
我觉得她极其令人恼火。
I think this is extremely unwise.
我认为这是极端不明智的。
He was very polite and very correct.
他很有礼貌且举止得体。
She is very caring and very genuine.
她很有同情心，也非常诚实可靠。