所謂外顯連線是指用特定的`連線詞將相關資訊進行連線。通常情況下，例子作為論據由for example, for instance, like, such as, take… as 等引出。
如：it is undeniable that mobile phones have facilitated our lives in many different ways. For example, when an emergency occurs, such as a traffic accident or a violent crime, mobile phones can help the victims to call the police or an ambulance immediately for help.
本例中，for example 引出例子論證“mobile phones have facilitated our lives in many different ways.” 而後面的 such as 則引出emergency 的具體形式。For instance 與它的用法完全相同，即後面要接句子例證。 Like, such as, take…as 等直接名詞（或相當於名詞的詞）。由於這些都是基本常識，這裡不再贅述。
為了使連線詞多樣化，建議考生運用下面的一些短語（或句式）連線論點和論據：
…is a case in point;
…serve as a typical example
…can be taken as an example;
one example is that…
another one is that等
如：Working part time when you are studying in university is beneficial to your life. I myself is a case in point（or ‘my experiences serve as a typical example’）. Through those experiences, I have learned to be independent and responsible.
