Welcome to EF, Hitesh! I don't know what the level of his English is is correct. It's easy, if a main clause is before a subordinate clause, the subject comes before the verb .
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Cool BreezeWelcome to EF, Hitesh! I don't know what the level of his English is is correct. It's easy, if a main clause is before a subordinate clause, the subject comes before the verb.
Where did he go?
But:
I'd like to know
Gencebay90I don't know who you are----yes this is trueI am sure it is true. It is also ungrammatical, in other words, wrong.
I don't know who are you-----yes this is also true
Gencebay90I don't know who are you-----yes this is also trueI don't know what dialect you speak, Gencebay90, but saying "I don't know who are you" is not only ungrammatical, but also sounds quite unnatural to my Connecticut ear.