what
are
four
grapes
and
three
grapes?
Dad:
Don‘t
you
know
simple
arithmetic?Haven‘t
you
done
a
problem
like
that
before?
Tommy:
No,
Dad,
we
always
use
bananas
at
school.
湯米：爸爸，四粒葡萄加三粒葡萄等於多少？
爸爸：妳難道連這麽簡單的算術題都不知道嗎？以前妳沒有做這類似這樣的
問題嗎？
湯米：做過，爸爸，不過在學校我們總是用香蕉來計算的．