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.

''Have been following" or " Be following" This is an exercise problem in my grammar book. There is a man walking behind us. He has been walking behind us for the last 20 minutes. He must____________. The standard answer is _be following._ But I'm wondering if "have been following" will be a better choice, since the action has been lasted for 20 minutes, and it's still happening, and more importantly, the speaker wants to emphasis the action itself, and the present perfect continous works well in this kind of situation when we're underlining the action, the process.

"Quality" Problem I saw an example in the book, which says '' The jacket you bought is very good quality". But quality is generally used as noun, even if it is sometimes used as adjective, it is only used in British English to discribe the newspaper or press. Thanks for your help in advance.

"go to your house" VS "come to your house" Can someone tell the difference and give us some examples? Thanks a lot in advance!

Why is '' speaking five languages'' a general ability? I saw these examples in the grammar book, it says:

1.My grandfather could speak five languages.

2.We were completely free. We could do what we wanted.(=we were allowed to do...)

The explanation to the first example is we also use could to say that somebody had the general ability or permission to do sth. So now I am wondering about what '' general ability'' really is, does it mean ''ordianry abiltiy"? if it does, I believe from the view of most people, a person who can speak five languages is more capable than an ordinary person.

The explanation to the second example is even more ridiculous from what I can see, because it happened in the past, so obviously we should use "could" instead of "can".

Many thanks for your answers.

Why is '' speaking five languages'' a general ability? I saw these examples in the grammar book, it says: 1.My grandfather could speak five languages. 2.We were completely free. We could do what we wanted.(=we were allowed to do...) The explanation to the first example is we also use could to say that somebody had the general ability or permission to do sth. So now I am wondering about what '' general ability'' is, does it mean ''ordianry abiltiy"? if it does, I believe from the view of most people, a person who can speak five languages is more capable than an ordinary person. The explanation to the second example is even more ridiculous from what I can see, because it happened in the past, so obviously we should use "could" instead of "can". Many thanks for your answers.