the crime rate is increasingly high; therefore, the government needs to enforce more laws to curb this situation. ( 副詞在並列句中)
短語
如on the contrary, in addition：用法和副詞用法完全一樣
例：they feel this is one area of life where they have the right to make decisions for themselves. for that reason, it would seem that the best approach would be work by persuasion rather than compulsion.
the government plays a crucial role in scientific research; on the other hand, private companies hold certain advantages in conducting scientific research. ( 短語在並列句中)
掌握連線詞的四大詞性及用法以後，連線詞的教學和運用就容易展開。我們可以參看考官範文，看看各類關係的時候考官如何使用連線詞，使文章凸顯出來。