Is 'may I ask what is that?' used commonly? I would like to know if this form 'may I ask what is that?' used commonly in daily life. I mean, it is grammarly wrong, but it seems I saw this kind of usage in American TV series. Any answers from native speakers would be appreciated.

“Will do” or " Be going to do" I've learned from the grammar book that "will do" is normally used when sb decides to do sth just at the time he's speaking or when we're trying to predict the future; while "be going to do'' is applied when we've decided to do before we speak or when we 're predicting the future, or we're predicting what'll happen based on the current situation.

So, there's an example below:

I will go to the U.S next year to study for an MBA degree.

But, in this case, it seems '' I'll do sth'' is a plan, while ''will'' is not usually used in sth has been planned or decided, but to apply in predicting future happenings or situations. Is it because there're still one year, going to U.S is not so sure, or "will" is generally less certain than "be going to" ?And sth like studying abroad should be serious and this guy should has thought long about it. This would not be something he just decides to do when he speakes, but something he has already decided before.

If this example is right, then what's the difference between '' I'll go to '' and '' I'm going to do'' in this case.

“Will do” or " Be going to do" I've learned from the grammar book that "will do" is normally used when sb decides to do sth just at the time he's speaking or when we're trying to predict the future; while "be going to do'' is applied when we've decided to do before we speak or when we 're predicting the future, or we're predicting what'll happen based on the current situation. So, there's an example below: I will go to the U.S next year to study for an MBA degree. But, in this case, it seems '' I'll do sth'' is a plan, while ''will'' is not usually used in sth has been planned or decided, but to apply in predicting future happenings or situations. Is it because there're still one year, going to U.S is not so sure, or "will" is generally less certain than "be going to" ? And sth like studying abroad should be serious and this guy should has thought long about it. If this example is right, then what's the difference between '' I'll go to '' and '' I'm going to do'' in this case.

What's the little difference between "may/might be doing" and "may/might do"?

The grammar says ''may/might do'' is used in talking about possible actions or happening in the future, while ''may/might be doing'' is applied in describing possible plans. They can be both fine in many cases with little difference of meaning.

But in the exercise:

What's Julia going to do when she leaves school?(go to university)

She hasn't decided yet. ____Answer_____

My answer is "She might/may be going to university", but the standard answer is "She might/may go to university'', so I wanna know if my answer works, since it's talking about future plan, and according to its own introduction, it should have worked. And I wanna know the slight difference between these two expressions.