A misplaced phrase or clause may result in ambiguity, as in the following example:
The couple returned from their Caribbean cruise which they had thoroughly enjoyed in a limousine.
Again, you can probably figure out the intended meaning, but at first reading, it sounds as though the couple had their Caribbean cruise in a limousine. You could fix this either by moving the phrase in a limousine closer to the verb it describes (returned) or by setting off the relative clause (which …) with commas:
The couple returned in a limousine from their Caribbean cruise, which they had thoroughly enjoyed.
The couple returned from their Caribbean cruise, which they had thoroughly enjoyed, in a limousine.
Watch Where You Place Phrases and Clauses