2 interrogative phrase in one sentence, is that possible?

Hi,
I think it's "Do you know what that is".You must not use inversion more than once... I know we should say "What kind of car do you think she's driving?", and not "What kind of car do you think is she driving?".

Do you know what that is?

Do you know how that is made?

Do you know when she will arrive?

GG was already posting... so yeah, no double inversions.

So are these four sentences correct? Just for confirmation so i won't confuse myself again

1.Does anyone know who the president of America was in late 1960?

2. It's amazing to know how these boys are going to be.

3.Do you have any idea what had just happened? or "Do you have any idea what thing had just happened"

4. "Do you know who was the best?" OR "Do you kn

1. Okay.

2. I don't understand this sentence.

3. This would make more sense with "have" instead of "had." But the word order is okay.

Anthon4. "Do you know who was the best?" OR "Do you know who the best was?" Please help

To understand that you need to wait and go on reading this thread. Discussion in progress...

What i meant in sentence number 2 is that they feel relieved to be able to know what their boys are going to be like (in specified profession), so is it ok? and Grammar Geek could you also please answer my question number 4 (just added, pardon me)

For the conclusion i'd like to know whether we are allowed to put (interrogative+interrogative) as in a phrase, or are they some specia

please help me Gurus to clear my doubt and my confusion about the interrogative+interrogative thing. I hope my final questions above will be answered and as my preference

Thanks

3. This would make more sense with "have" instead of "had." But the word order is okay.

Barb -- I don't think you really want "have" instead of "had" in that sentence, which was "Do you have any idea what had just happened?" Maybe "Do you have any idea what has just happened?" Or "Do you have any idea what just happened?"

hi

I really confused with the phrase that i asked, is it this: "do you know was the best player" or this "do you know who the best player was"

And is it applicable for every phrase to not to put two interrogative sentences subsequently (e.g who do you think is he) please answer this