I will buy a new powerbank to my young borther for celebrating the Christmas

[output]

I'm writing with myself about my daily.

Is the following sentence correct and natural?

I will buy a new powerbank to my young borther for celebrating the Christmas.

 

[tedmc]

I'm writing with myself about my daily journal.

Is the following sentence (written by me) correct and natural?

I will buy/am buying a new power (space required) bank to for my young brother for celebrating the Christmas.

I don't think there are second-hand power banks for sale.

 

[emsr2d2]

I don't think there are second-hand power banks for sale.

Are you talking specifically about China or in general? I can assure you it's really easy to buy a second-hand one in the UK.

 

[output]

Is the following sentence correct and natural after re-writing.

I will buy a powerbank to my young brother for Christmas.

 

[emsr2d2]

Look at the corrections tedmc made in post #2 of this thread. You've made at least one of the errors again.