The worker is very tired.

工人很累。

Oh! You must be very tired.

哦！你一定很累。

She had been working all day and was very tired.

她工作了一整天，非常累。

It seems he is very tired.

看上去他很累。

His face looked very tired.

他的面孔看起来很疲惫。

His appearance looks very tired.

他的样子看起来很疲惫。

She is not angry but very tired.

她不是生气，而是很累。

He looks as if he is very tired.

他看起来仿佛很累。

Jet lag makes me feel very tired.

倒时差让我感觉很疲惫。

Insomnia made him feel very tired.

失眠让他感到非常疲惫。