Im going to be quick, just say that i used broad match for this keyword "Dates In Miami" On broad match. If i left out "In" and Had Dates Miami as the keyword, will be ad still show up if someone searched with "Dates In Miami"?
Yes it will, here is Adwords explanation: With broad match, the Google AdWords system automatically runs your ads on relevant variations of your keywords, even if these terms aren't in your keyword lists. Keyword variations can include synonyms, singular/plural forms, relevant variants of your keywords, and phrases containing your keywords. For example, if you're currently running ads on the broad-matched keyword web hosting, your ads may show for the search queries web hosting company or webhost. The keyword variations that are allowed to trigger your ads will change over time, as the AdWords system continually monitors your keyword quality and performance factors. Your ads will only continue showing on the highest-performing and most relevant keyword variations.
As noted above using broad match your ads could display for terms such as miami heat miami beach apricots & dates date pie recipe You would be better off using exact & phrase match...see which keywords convert and then testing the converting keywords in broad match...