He's putting a lot of work into improving his French.

他正下功夫提高他的法语水平。

It's all very well for you to say it doesn't matter, but I've put a lot of work into this and I want it to be a success.

你说这无所谓当然容易，可是我却已经花费很大力气而且想要取得成功。

Break your work into little steps.

将你的工作拆分成小的步骤。

I really put a lot of work into it.

我确实在上面下了很多功夫。

Converting the graphical work into code.

将图形界面转化成代码。