The problem of modeling of semantic structure of similative phraseological units is described. With the use of formal meta language SESAME invented for the purposes of the conducted semantic analyses (a meaningful acronym of Standard Events and Situations Artificial Meta-language) on the basis of frame-scenario models, the authors made an attempt to analyze the transferred meaning and in particular the degree of modeling potential, the degree of explicitness / implicitness, the degree of semantic dividedness / integrity and the scale of the denotative area of English similative phraseological units. Similative phraseological units under consideration can be comparative, metaphoric or allegoric.