(There's) No need to ...  没有……的必要

　　There's no need to be embarrassed. 没有必要感到惶恐。

　　There's really no need to explain. 真没有必要作解释。

　　No need to talk about it. 没必要谈论这个话题。

　　You need to clean up this place! 你该打扫这个地方了！

　　I will. There's no need to get angry.  我会的，不过你也没必要生气吧。