You don’t quite look your usual self today.

你今天脸色有些不对。

We are happy to see that he has returned to his usual self.

我们很高兴看到他恢复了常态。

Paula seemed to be her usual cheerful self.

保拉好像又和她平常一样高兴了。

She certainly looked less than her usual perky self.

她看起来确实不如往常那样生龙活虎。

By the next day she was her usual bouncing, energetic self.

第二天，她又是原来那个自信而又充满活力的自己了。

He did not look or act like his usual self--his face was very red, his hat was on the back of his head, his hair was wildly rumpled.

他此时的样子和表现都一反常态----他的脸涨得通红，帽子向后斜戴着，头发也乱成一团。

Actually, at that time, the person is not his usual self anymore. He was probably under very great pressure that he lost his own control.

事实上，那时候那个人已经不再是平常的他，可能已因压力极大而失去控制；

I'm not my usual self today.

我今天不大对劲。

Quite unlike his usual self, he scarcely said anything.

他跟平时大为不同，几乎什么话都没说。

Anxiousness : You may not be your usual self.

焦躁不按：你可能不象平常的自己。