Mary is sad because she can't sing well.
问题描述:
Mary is sad because she can't sing well.
答
玛丽很悲伤因为她唱不好歌
答
玛丽由於不能唱好歌而伤心
答
玛丽很难过,因为她唱不好歌。
答
Mary很难过因为没能唱好歌
答
玛丽很伤心因为她歌唱得不好