appreciate和grateful的不同用法是什么
appreciate (adj.) appreciative (inappreciative); (n.) appreciation appreciate作为“感激”解释时是及物动词，常用搭配：appreciate doing sth，后跟动名词或代词it代指的事情。习惯上只能接“事”作宾语(object)，而不能接“人”作宾语： 正：I’d appreciate some help. 误：I’d appreciate you for some help. appreciate也指“欣赏”，有“对某事物有一定的兴趣及认识”的含义，如： In time you’ll appreciate the beauty and subtlety of this language. 此外，在商业书信来往中，appreciate一字出现率颇高，但其意和上面提及的“欣赏”音乐有所不同；
如： We greatly appreciate your getting the goods to us at such short notice. 在这句里，“We greatly appreciate...”和“Thank you for...”含意相同。 appreciate的第三个意思是“（对一种情况或问题的）理解”，如 I fully appreciate your concern. We will do all in our power to help. appreciate的另一用法是指某东西“增值”，是不及物动词，如： Their investments have appreciated over the years. 大家有没有留意到appreciate解作升值时是不需接宾语(object)的？
grateful （反）ungrateful; (n.) gratitude (ingratitude) grateful没有相应的动词，它的常用搭配是be grateful to sb for sth，或者后面跟不定式或that从句，如： I am extremely grateful to all the teachers for their help. She seems to think I should be grateful to have a job at all. He was grateful that she didn’t tell his parents about the incident. 另外，grateful也可用于表达请求，这种用法在书信或者其他正式场合用得比较多，如： I would be grateful if you could send the completed form back as soon as possible.
除了上述的用法区别之外，thank, appreciate和grateful在表达情感上也有略微的区别： “When you are ’grateful’ to someone, you can sometimes feel a little ’beholden’ to them. It creates a feeling of ’owingness’.“ 也就是说grateful带有一点“义务”的性质。 而另一方面，“When we appreciate someone or something there is a feeling of ending. There is a feeling of finality. We do not feel the need to pay this person back.“ 当我们用appreciate有点意味着这件事的结束，不需要再做什么回报。
struts2是什么
曾经有人发明了servlet,jsp, 一群人欢欣鼓舞,开始投入jsp的怀抱, 可以慢慢的发现获取参数好麻烦,跳转个页面也难,调试也难, 最重要的随时都有乱码可能
于是有几个自认为很NB的人就搞出一个struts1, 自动封装参数, 优雅的跳转, 前后台分离,MVC概念应用, 出乎意料的火了
后来他们就有钱了, 把xwork忽悠过来一起搞出来一个struts2, 国际化啊, 低耦合啊, 各种第三方框架支持啊, 反正很臃肿后就看上去高大上了
上面说的这个很久远的故事一直发展到今天, struts2已经融入了各种培训机构, 企业单位个人都在很爽快的使用
（烂）的英文是什么
烂 [形] rotten; decayed; mashed; mushy; [动] （腐烂） rot; fester; decay; [例句]豆子煮烂了。 The beans are now soft enough to eat.
-rat
