我们和他们干同样的活。

He is not the same man as he was.

他和从前不一样了。

I hope to get such a dictionary as he is using.

我希望得到像他正在用的那样的一本词典。

四、关系代词that与which的用法区别

1．关系代词用which不用that的情况

(1)非限制性定语从句中。

He had failed in the maths exam，which made his father very angry.

他数学考试没有及格，这使他的父亲很生气。

(2)关系词前有介词时。

This is the house in which Lu Xun used to live.

这就是鲁迅过去居住的房子。

(3)先行词本身是that时。

What's that which flashed in the sky just now?

刚才在天空中一闪而过的是什么东西？

(4)关系代词后有插入语时。

Here is the English grammar book which，I think，can help improve your English.

这就是那本我认为能帮你提高英语水平的英语语法书。

2．关系代词用that不用which的情况

(1)当先行词是all，everything，nothing，something，anything，much，little，few等不定代词时。

That is all that I want to say.

那就是所有我想要说的。

(2)当先行词是序数词或被序数词修饰时。

When people talk about Hangzhou，the first that comes to mind is the West Lake.

当人们谈及杭州时，第一个想到的是西湖。

The first place that they visited in Guilin was Elephant Trunk Hill.

在桂林他们参观的第一个地方是象鼻山。

(3)当先行词是形容词最高级或被形容词最高级修饰时。

This is the best film that I have ever seen.

这部电影是我看过的最好的一部。

(4)当先行词被the very，the only等修饰时。

This is the very dictionary that helps me a lot.

这正是那本对我帮助很大的词典。