[Vocabulary] All this while

[Kumar Nadimuthu]

All this while, I completed my Engineering course.

Is it correct? 'All this while' is new phrase to me, could you please explain with some examples?

 

[emsr2d2]

"All this while" means "Over the course of an unspecified period of time" but it doesn't fit at all with the part after the comma. In BrE, we usually say "All this time".

I've just discovered that I was born at 8pm. All this time, I've believed I was born at 10.32am!
Someone told me that brown really suits me and all this time I've been wearing nothing but red and black.

 

[teechar]

Your sentence is not natural.
You can say: "Meanwhile, I completed my engineering course."
http://dictionary.cambridge.org/dictionary/british/meanwhile

There's also the idiom "all the while", but that wouldn't work in your sentence.
http://dictionary.cambridge.org/dictionary/british/all-the-while