<p>So, today I was reviewing grammar with the Barron's book, and I came across some problems. So here are some questions:</p>
<p>How do you know when to use because of/ due to/ as a result of?</p>
<p>In the phrase: "Everyone but (him/he) is ecstatic", is him or he correct and why?</p>
<p>“Everyone but (him/he) is ecstatic”.</p>
<p>As used above “but” is a preposition. [him/he] is the object of the preposition. The object of a preposition is the “objective case” of the the pronoun “he” – hence “him”.</p>
<p>Your other examples (because of/ due to/ as a result of) are all prepositions and the same rule applies.</p>
<p>The use of the objective case of the pronoun as the object of the preposition is a basic rule of English grammar.</p>