Acknowledge及物动词 vt. 强调一个“公”字，在公众场合表达谢意！

1. 承认[(+as)][+v-ing][+that][O2][O7][O8]
I acknowledge that her criticism is just.
我承认她的批评是公正的。

2.就...表示谢忱
The candidate waved his hands to acknowledge the cheers of the crowd.
候选人挥手对大众的欢呼表示感谢。

3.告知收到(信件等)
I acknowledged her letter at once.
我马上告知收到了她的信。

4.对...打招呼
Stella didn't even acknowledge me when I waved a greeting.
我向斯特拉挥手致意,可她连招呼也不打一个。

appreciate

及物动词 vt. 强调一个“赏”字，因欣赏而感谢！

1. 欣赏,赏识
Her talent for music was not appreciated.
她的音乐才能无人赏识。

2. 感谢,感激
They deeply appreciated his kindness.
他们对他的好意深表感谢。

3. 体会,领会,察知[W][+(that)]
I am afraid you have not appreciated the urgency of the matter.
恐怕你还没有意识到这件事的紧迫性。

4. 正确地评价,鉴别

不及物动词 vi.

1. (土地、货币等)增值[(+in)]
Land will continue to appreciate.
土地将继续增值。

thank及物动词 vt. 强调两个人之间的谢意也是，因对方做了具体的事或者说了话，而感谢！

1. 感谢[(+for)]
I can't thank you enough.
我对你真是感激不尽。
Thank you for telling me.
谢谢你告诉我。

2. 要...负责,责怪
She can thank herself for this accident.
这个事故要怪她自己。

3. (用于will之后,表示客气的请求)感谢,请
I will thank you to turn on the lights.
请你把电灯打开。

名词 n.

1.感谢;谢意;谢辞[P]
I must offer my heartfelt thanks to you.
我要向你表示衷心的感谢。
I'm writing a letter of thanks to them.
我在给他们写一封谢函。
Many thanks for your help.
多谢你帮忙。