Begin and start
Meaning / formality
Begin and
start can both be used with the same meaning:
I
began /
started teaching when I was 25.
If Matt doesn't come soon, let's
begin /
start without him.
We generally prefer
begin when we are using a more formal style. Compare:
We will
begin the meeting with a message from the President.
Oh no! It's
starting to rain!
Cases where begin is NOT possible
Start (but not
begin) is used to mean:
a. "start a journey"
I think we should
start at 5am, while the roads are empty.
b. "start working" (for machines)
The car won't
start.
c. "make something start"
How do you
start the washing machine?