小题大作------fuss about trifles

例句：
A: If yon don't hand in the assignment, you'll be giged.
如果你不交作业,你会被记过。
B: Don't fuss about trifles. Is it that serious?
别小题大作，有那么严重吗？

同义词：
a tempest In a teapot

a storm in a teacup
break a butterfly on a wheel
make a mountain out of a molehill