Proper Idiom usage

<p>Does anyone have a list of idioms and their proper usage? For example, phrases such as “contrasted to” (not with), and “preoccuptation with” as opposed to preoccupation in.</p>

<p>One more question:
It’s “They swam across the river.” and “They have swum across the river.” Is that right?</p>

<p>yes i believe that’s correct.</p>

<p>my dad has this huge book on american idioms but i think he has it in vietnam -_-;</p>

<p>[Idiomatic</a> Usage in English](<a href=“http://www.uwf.edu/writelab/handouts/idiomatic.cfm]Idiomatic”>The UWF Writing Lab | University of West Florida)</p>

<p>here is a list just from googling. but these are rather simple and definitely not a very comprehensive list.</p>

<p>yes i believe that’s correct.</p>

<p>my dad has this huge book on american idioms but i think he has it in vietnam -_-;</p>