[Grammar] I didn't know what was my fault.

[ercantuncer]

Dear all,

Can you please tell me which of the following sentences are correct? I think the auxiliary verb must be in the end of the sentences but I'm not sure.Maybe both version are correct.If I'm right about the place of auxiliary verb must I use 'are' after 'correct' in my question sentence?

1) I didn't know what was my fault. or I didn't know what my fault was.
2) Can you tell me where is my wallet? or Can you tell me where my wallet is?

 

[teechar]

Dear all,
Can you please tell me which of the following sentences are correct? I think the auxiliary verb must be at [STRIKE]in[/STRIKE] the end of the sentences, but I'm not sure. Maybe both versions are correct.

No, see below.

If I'm right about the place of the auxiliary verb, must I use 'are' after 'correct' in my question sentence?

No, that would be incorrect.

I didn't know what was my fault.

Incorrect.

I didn't know what my fault was.

Correct.

Can you tell me where is my wallet?

Incorrect.

Can you tell me where my wallet is?

Correct.

 

[emsr2d2]

As far as "I didn't know what was my fault" goes, there is a scenario in which it could be used.

My teacher said to me, "It's your fault". The problem was I didn't know what was my fault.

 

[Raymott]

Another scenario involves knowing the faults, or the problem. "We both made mistakes. I didn't know what was my fault, and what was Peter's."