多此一举

wèi hé duō cǐ yī jǔ

为何多此一举？

Why take the trouble to do that?

zhè jiǎn zhí duō cǐ yī jǔ

这简直多此一举。

This is really unnecessary.

bié duō cǐ yī jǔ

别多此一举。

Don't bother to do that.

wǒ cān jiā xià wǔ de huó dòng shì duō cǐ yī jǔ

我参加下午的活动是多此一举。

My presence at the afternoon's proceedings was superfluous.

tǎo lùn tóng yàng de tí mù shì duō cǐ yī jǔ

讨论同样的题目是多此一举。

To discuss on the same topic is like coals to Newcastle.