Re: How will we read this sentence to show the presence of the word "have" ?
You don't need to show the presence of "have" or "would"; it's understood. Just pronounce the expressions as "ive" and "ide", and everyone will understand. The only time you would do otherwise is when you wanted to emphasise that you have read that book. In that case, you would not use "I've", but say "I have".
If I knew how to send you an audio, I would. Unfortunately, I'm [pronounced "ime"] too old for clever stuff like that.
I'm not a teacher of English, but I have spoken it for (almost) all of my life....