过去分词做非谓语可以和定于从句转换吗

Question

hey reduced the number of animals used in experiments. 可不可以写成They reduced the number of animals which are used in experiments.

Answer 1

当然可以。定语从句关系代词此处指物用which，因为是被使用，所以应该是be done,结合在一起就应该是which be used，应为which指的是可数名词复数，所以be此处用are。

Answer 2

过去分词做定语，相当于一个定语从句。没有问题。
在别人说的基础上，补充一点，即注意前后时态一致：
They reduced the number of animals which _were_ used in experiments.本回答被网友采纳

Answer 3

可以的，你到高二就知道了。
过去分词词组用作定语要后置，即放在被修饰的词后面，从意义上相当于一个定语从句，也可以作为单复句转换的练习。例如；
The novels written by Muyan sell well in China(单句)
The novels (that/which were written by Muyan)sell well in China.(复句)

Answer 4

可以，不错。看来还真有些功底了。
Work hard, and you will hold a bright future

Answer 5

完全可以，其实第一个句子就是省略了that的定语从句，当然这个句子用which也是可以的。