sentence that I am not sure about

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Dear Teachers,

Do my sentences have any big problem? Some of the sentences are something unsure to me.


I learned of the position of clerk from him.

We had a talk on the details of it and I am very interested in learning handling the mails.

It is very valuable to me to expand my knowledge of it.


It will brought me into the practice of ...(a work)


The position will help my future career.

He show a high initiative in ...(something)

I had been learning ... (something) since I was eight.

[susiedqq]

I learned of the position of clerk from him.
I learned about the clerk's position from him.

We had a talk on the details of it and I am very interested in
learning handling the mails.
We had a talk about the details and I am very interested in learning how to handle the mail.

It is very valuable to me to expand my knowledge of it.
It is important that I learn more about it.

It will brought me into the practice of ...(a work)
It will bring me into a career of medicine. ??? not sure what you mean.

The position will help my future career.
OK

He show a high initiative in ...(something)
He shows a high initiative in math.

I had been learning ... (something) since I was eight.
I have been learning math since I was eight years old.