to recognize how good someone or something is and to value them or it

There's no point buying him expensive wines - he doesn't appreciate them. 给他买名贵的酒没有用——他不懂品酒。

greatly appreciated Any help you could give me would be greatly appreciated.

much appreciated His visits were much appreciated by the boys.

to understand a situation and realize that it is important

We appreciate the need for immediate action. 我们充分意识到了马上采取行动的必要性。

[ + that ] I appreciate that it's a difficult decision for you to make. 我体会得出，你作出这样的决定有多难。

[ + question word ] I don't think you appreciate how much time I spent preparing this meal. 我觉得你没有意识到我做这顿饭花了多少时间。

used when you are thanking someone or showing that you are grateful

We really appreciate all the help you gave us last weekend. 你们上周末给予我们大力帮助，我们非常感谢。

[ + -ing verb ] I appreciate your making the effort to come. 你能拨冗前来，我深表感激。

We sincerely appreciate the feedback you have given us.

I received your kind letter and I really appreciate it.

I'm feeling much better now, but I appreciate your concern.

She really appreciated his offers of help.

used when you are politely asking for something

would appreciate it I would appreciate it if you could let me know (= please let me know) in advance whether or not you will be coming. 如能提前告知能否前来，我将不胜感激。

I would appreciate hearing from you now and then.

They said they would appreciate if the minister withdrew his statement immediately.

If you could send some food up to our room, we would really appreciate it.

I'd appreciate any help you can offer.

to increase in value

appreciate by The value of our house has appreciated by 50 percent in the last two years. 过去两年内我们房子的价格上涨了50%。

appreciate in value Our house has appreciated in value over the last two years.