cue words of cost and non-cost eff

can someone tell me what are the cue words to determine the monsters eff whether it is a cost or not? im really confused to that.

answers by the way are highly appreciated.

Cost is usually seperated by using 2 sentences and the sentence for cost is the 1st sentence like "Trade-In", the 2nd recognition for cost is "you do something to do something", the word "to" seperate cost from effect. Other situation is part of the effect. The only exception for strange wording for cost is Quickdraw Synchron, it stranges because the wording is "You can send 1 monster from your hand to the Graveyard and Special Summon this card (from your hand)", usually this wording is for part of the effect.

i see. thank you for that informative reply.