1、我没有你们想要的东西.
I don't have the thing that you want.
2、北京是她想参观的城市.
Beijing is the city which she wants to visit.
3、他经常帮助需要帮助的人.
He often helps those people who need help.
4、我要照顾的人是我的奶奶.
The person that I need to look after is my grandma.
英语翻译还有：北京是她想参观的城市.他经常帮助需要帮助的人.我要照顾的人是我的奶奶.