Question

可不可以这样表达；our classroom is here times as big as theirs,big需要变成large吗？

Answer 1

big 可以用larger替换。但是全句应该说
our classroom here is （）times as big （large）as theirs。
括弧中要写明一个量。例如：
Our new school is four times as big as the old one.我们的新学校是老学校的四倍大。
His cake is four times as big as mine.他的蛋糕是我的四倍大。
This lake is three times as big as that.这个湖的大小是那个湖的3倍。
Yours is some times as big as mine.你的比我的大几倍。
或：
Our classroom is as large as their classroom.我们的教室与他们的教室一样大。