of后加什么动词

In school, he was not one of the achievers.

上学时他不属于拔尖的`那类。

The two groups of children have quite different characteristics.

这两组儿童具有截然不同的特点。

The project is still causing him a lot of problems.

这项工程现在仍然给他带来许多的麻烦。

The need to communicate is a key characteristic of human society.

需要交流是人类社会最重要的一个特征。

The new test should aid in the early detection of the disease.

新的化验应该有助于早早检查出这种疾病。