If you don't finish your homework, you'll be in big, big trouble.
如果你不完成作业,你就有大麻烦了。
I wish I could find one just like it.
要是我也能碰到这样一件就好了。
In the first place, any scientific study requires that there be no preferential weighting of one or another of the items in the series it selects for its consideration.