1.assume v. 设想，假定，以为，推定
I didn't see your cell phone, so I assumed you'd left.
People assume they know me through and through the moment we meet.
Putting two and two together, I assume that this was the car he used.
If the package is wrapped well, we assume the contents are also wonderful
I hope to go to college next year, always assuming I pass my exams.
Assuming that Dad agrees, when do you want to shop for a new car?
Assume A knows B is guilty.
Assuming he's still alive, how old would he be now?
I naively assumed that I would be paid for the work.
He assumed, wrongly, that she did not care.
It would be rash to assume that everyone will agree with you on this.
I had assumed him to be a Belgian.
I assume that you have heard the news. 料想你已经听到了那个消息。
I assumed that you had known the result.
I assume they will wait for us.
2.presume v. [正式]假设，假定；相信；料想，认为
I presumed (that) he understood the rules.
I presumed him to be her husband.
This logical analysis presumes the separation of subject from object.
I presume that this price includes all transportation and accomodation fees.
I presume you're here on business.
I would never presume it would be ok for people to hug the Queen.
3.suppose v. [正式]假定；猜想，推断，认为，料想，设想，假设
I suppose your presence here today is not entirely coincidental.
These new friends of hers are supposed to be very rich.
Well, I suppose I could fit you in at 3.45.
Prices will go up, I suppose.
I suppose someone had to do it. (This is just what I guess. I may be wrong)
I should suppose him to be about sixty. 我猜想他大约60岁左右。
Let's suppose that he is right. 让我们假定他是对的。
I had supposed his wife a younger woman.
She had supposed him (to be) very rich.
I don't suppose for a minute that he'll agree.
Suppose we take a later train?
Suppose （that） flights are fully booked on that day─which other day could we go?
I suppose you think you're funny...
I don't suppose I could have a look at your newspaper, could I?
I don't suppose you could tell me where James Street is , could you?
Do you suppose he was telling the truth?...
Do you suppose we could get together for a little chat sometime soon?