If you go surfing, you will rise and fall with the waves.(如果你去沖浪，你會隨波浪起伏。)

Surfing the Internet is fun, but it's also a time waster.(上網很有趣，但也是一件浪費時間的事。)

I love surfing the Internet very much.(我非常喜歡上網。)

It includes the cost of surfing the Internet, so you can bring your computer.(它包括了上網的費用，所以你可以帶著你的電腦。)

The simple fact is that, for most people, surfing is too expensive to do on a regular basis.(這個簡單的事實是：對大多數人來說，網上沖浪費用太高，無法經常進行。)

I like surfing with the friends.(我喜歡和朋友們一起沖浪。)

Are you surfing the Internet?(你正在上網嗎？)

His whole life revolves around surfing.(他一生都在做與沖浪相關的事。)

People learn about foreign countries by surfing the Internet.(人們通過上網了解外國。)

Soon the two were surfing together.(不久，兩人一起沖浪。)