1.There are many advantages to+V-ing ……有很多好處/優點
例句：There are many advantages to doing aerobics.
做有氧運動有許多好處。

2.have difficulty+(in) V-ing 從事/做……有困難
例句：Ben has difficulty breathing in Taipei City.
本在臺北市呼吸困難。

3.To begin with, S+V 首先，……
例句：To begin with, you should read this book on bow to get along with others.
首先，你必須讀這本如何與人相處的書。

4.firsthand information 第一手的資料
例句：A witness is simply one who reports what he has seen and heard. He shares personal knowledge and firsthand information.
見證人就是向人說明自己的所見所聞，與人分享他的親身經歷和第一手資料。