Don't think you can learn grammatical rules like you learn multiplication tables.
不能像记乘法表那样记语法规则.
The multiplication of numbers have make our club building too small.
会员的增加使得我们的俱乐部拥挤不堪。
Our teacher used to drum our multiplication tables into us.
我们老师过去老是让我们反覆背诵乘法表.