3 The government plays a crucial role in scientific research, Nonetheless, private companies hold certain advantages in conducting scientific research.
Definition 下定义关系
标志词 A is best characterized by…( A 最明显的特征是…),A constitutes…(A 构成…) A means…, A consists of …(A 由…组成).
e.g. A fine journalist is best characterized by discipline, determination and keen
observations.
一个好的记者最重要的特点是自律，毅力和敏锐的观察。
Animal experimentation, in some cases, constitutes callous abuse of test animals.
Supposition 假设论证
标志词 provided that…(如果) given the choice…(如果可以选择的话…)only if…(只有…)as long as…(只要) if…, suppose that…
e.g. Provided that we can minimize the pain of test animals, animal experimentation should be continued.
e.g. Given the choice, many people would live in big cities rather than the countryside.
Modification 修饰关系
标志词 that, which, who
In this day age, we have a proliferation of buildings that look exactly like the buildings our ancestors built.
Today, teenage students are under increasingly severe stress in their studies, which has disturbed and alarmed many adults.
以上就是汇总的七大类雅思写作常用连接词的全部内容，非常详细，对于其中的标志性词汇的总结更是对大家写作有很大的帮助的。大家在备考自己的雅思写作考试的时候，可以根据题目的不同 ，选择不同的连接词进行适当的应用。
