It yeilds a better understanding of Melville's works<u> if read</u> perceptively.<br/><br/>It = Delaney's book about Melville's work.<br/><br/>Q) I don't know this type of subject omission there. How can the subject be omitted where there seems no clue in main cluase?<br/><br/>Ah.. I got a glimpse of it. Does it happen to be "~~ if <i><u>it is</u></i> read perceptively"? If so, does this happen often?(formal, informal..)