He looks very sad

伤心───Sad;看起来───seem

Her face, though sad, still evoked a feeling of serenity.───她的脸色虽然悲伤, 但仍使人感觉安详.

She was deeply affected by the sad story.───她被那个悲伤的故事深深感动了.

I heard the sad chronicle of his accidents.───我听到了关于他出事的悲惨经过.

The sad news doubled him up.───噩耗使他悲痛欲绝.

Separation from his friends made him sad.───与朋友们分离使他伤心.

Joe is sad because he just got the air from his girlfriend.───乔很伤心,因为他失恋了.

When the six weeks were up, everybody was sad that she had to leave.───6周过去了，大家都为她不得不离开而难过。

I was sad to hear that you're sick.───听说你病了,我心里很难过.