英语翻译

问题描述:

英语翻译
Math is an interesting subject .
Our class as large as 106 .
He brushed his teeth twice yesterday .
We had a good time at the party the day before yesterday .
He is watching TV when I go to see him yesterday .
我这些句子的语法用的正确吗?

数学是一门有趣的学科
我们班的同学多达106人
他昨天刷了两次牙
前天我们在聚会上玩得很开心
昨天当我去看望他的时候,他正在看电视