I am new to LINQ to entity how can I create a dynamic query

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C#

SQL

EF6.0

I have just started using LINQ to Entities and I am trying to create a dynamic query that will only select partial columns and/or order by different columns dynamically. My background was writing dynamic SQL strings and using the sql client classes. I much prefer writing LINQ to Entities for data access because of the ease of writing it.. Can someone please point me in the proper direction in version 4.5.1 of .NET and version 6 of Entity? I have trouble believing that with this great technology there is no way to specify that I only want certain columns with out writing a different method for each set of columns and or ordering... that makes we want to go back to string strings and ADO. Not looking for someone to write my code just looking for expert advice on the proper pattern to pursue. Thank you

Edit: I have investigated System.Linq.Dynamic but it looks like it has not been updated in a couple of years. I have also looked at the ExpressionBuilder class.. I realize there are a few ways to do it but don't want to start down a path and waste a bunch of time because there is a better way of doing this currently.