Here is one more comparative form that is common in spoken English.
Before when we used adjectives to compare 2 things the adjectives would change or we would add more.
big – bigger / good – better / expensive – more expensive
When we use AS……AS to compare 2 things the adjective does not change. Please read the following examples:
“She’s twice as old as her husband.”
“He’s not as stupid as he looks!”
“Part 2 of a movie is never as good as the first one.”
“Russian is not quite as difficult as Chinese.”
Make some of your own example sentences using as….as!
“I’m almost as good in history as in math.”