3、may be,may是情态动词,be是动词原形,两者构成完整的谓语形式,与主语形成系表结构,意为“也许是、可能是”.
I can’t find my watch.It may be in your pocket.
我找不到我的手表了,它可能在你的口袋里.
例句：
1、There’s something wrong with my PC. I can’t load my photos.
我电脑出了点问题，我不能加载照片了。
2、It could be a virus, maybe.
可能是中病毒了。
3、Ronnie and Linda are going to leave New Zealand in January.
Ronnie和Linda一月份就要离开新西兰了。
4、Why? I thought they were very happy there.
为什么，我以为他们在那里很开心。
5、 I’m not sure. Perhaps they feel a bit lonely.
我不确定，可能是他们觉得有点孤单吧。