2020年12月10日 · "Shown" is the past participle of "show". Past participles are used in several ways. One use is to make a passive verb: I show the book. The book is shown. ...as I show in …
2012年10月28日 · 1. PCBs have been shown to cause cancer in animals. 2. PCBs have shown to cause cancer in animals. 1. is a passive: it means that someone has demonstrated or …
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2013年10月6日 · Thank you! 1. Tom challenges his counterpart's view with several reasons below. 2. Tom challenges his counterpart's view with several reasons as shown below. 3. Tom …
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