How does shakespeare use the image of smoke and fire to develop romeo's ideas about love in lines 188-189?

 Two major explanations exist. This methaphor might refer to the painfulness of love: the smoke, when it gets to the eye, is painful, it even make someone cry, such as love – which is, despite of being beautiful at the same time, makes people ofthen suffer.

Another explanation is, that where there is smoke, there is also fire – in the lovers eye. Somke has to be fed by something – so love itself is only something secondary. But what lies deep inside is more important: it is real fire, real pain which makes you work and live or suffer either.

true. the definition explains it: a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc. this is a dictionary definition that i have looked up in a dictionary.