alternative [l?tn?t?v] n.二選壹（選擇或方法） / adj.可替代的
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高頻結構：作為...的替換
1. as an alternative
2. as an alternative to sth
3. as an alternative to doing sth
(PS: to是介詞喲~)
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例1：有聲讀物是壹種可替代紙質閱讀的有趣方法。
Audiobook is an interesting alternative to paper reading.
例2.電子書是壹種可替代看書的方便方式。
E-book is a conventient alternative to paper reading. (PS:使用了to sth結構）
例3.科學家正在研究壹種治療這種疾病的替代方法。
Scientists are studying/developing an alternative approach to treating this disease. ?(PS:使用了to doing sth結構）
例4.我們壹直在尋找常規治療的替代方法，但似乎沒有其他的選擇。
We have been looking for alternatives to the usual treatment, but it seems there are few options. ?(PS:使用了to sth結構）
假期已過半，記得每天抽二十分鐘學習哦，假日也加油！