▲every bit 是固定搭配，主要用于修饰as…as结构，起强调作用，意思是“完全”。如：

She’s every bit as beautiful as her sister. 她和她姐姐同样漂亮。

The copy is every bit as good as the original. 这个抄本和原书完全一样。

She looked every bit as formidable as her mother. 她看上去和她母亲一样，令人望而生畏。

▲half 也可用于修饰 as…as 结构，意思是“一半……”：

I earn half as much as you do. 我只赚你的一半钱。

You’re not half as clever us you think you are. 你远不是自己想像的那么聪明。

At best we can do only half as much as last year. 我们最多能完成去年工作量的一半。

He didn’t sell half as many videos as he thought he would.他售出的录像带还不到他设想的一半。