thank和thanks詞性不同。thank是動詞，要與you等連用，thanks是名詞，可單獨使用。使用場合不同。thank比較正式，用于正式場合，而thanks比較隨意。thank的基本意思是“謝謝”“感謝”，thanks，意思是“感謝，謝謝，道謝的話”。

I must write and thank Mary for the present.

我得寫信感謝瑪麗送給我這份禮物。

Thanks for the present ─ it's just what I wanted.

感謝贈我這份禮物，這正是我想要的。

She took the money without so much as a thank you.

她接過錢，連聲謝謝都沒說。

He couldn't find the words to thank her enough.

他找不出適當?shù)脑捳Z來充分表達對她的感激之情。

Many thanks for giving us so much help.

謝謝你給了我們這么多的幫助。

來源：高三網