This is the engineer who he cooperated with in the project.

　　先行词指人时，关系代词既可以用who, 也可以用that。但关系代词在定语从句中用作主语时，多用主格who。如：

　　 Beyond the practical need to make order out of chaos, the rise of the dictionaries is associated with the rise of the English middle class, who were anxious to define and circumscribe the various world to conquer.

　　 It is Tom who should be punished.

　　 The American zoologist Donald Griffin, who was largely responsible for the discovery of sonar in bats, coined the term echolocation to cover both sonar and radar, whether used by animals or by human instruments.

　　在下列情况中多用that, 而不用who或者which。如：

　　 much

　　little

　　none

　　everything +先行词 +that

　　everybody

　　nothing

　　nobody

　　E.g. There is nothing in the world that can frighten him.

　　 先行词前面有最高级形容词修饰时

　　He is the most boring speaker that I have ever heard.

　　This is the most interesting book that I have ever read.

　　 先行词有以下代词或者有下列代词修饰时

　　the first

　　the last

【雅思阅读常见形容词性从句整理】相关文章：

★ 雅思阅读基本规律的总结

★ 雅思阅读的三大技巧

★ 雅思阅读泛读精选

★ 突破雅思：阅读到 “悦”读

★ 雅思阅读的四大难点及应对技巧

★ 雅思阅读|要阅读方法

★ 雅思阅读的解题步骤汇总

★ 雅思阅读：“审题”的重要性

★ 雅思阅读定位词解析

★ 雅思阅读：14招拿7分