thanks a lot 还是thank a lot ,哪儿个对？

Thanks a lot
thank是个名词,也有复数形式.
所以再说a lot的时候,要加s

thanks a lot

表示感谢的还有 thank you thanks
i appreciate that 。

应该是thanks a lot对，这是英语的习惯用法.

thanks a lot 对
thanks a lot =thank you very much

thanks a lot
definitely