if not better than 是什么意思

if not better than实际上是If (A is省略) not better than( B 省略) 条件状语从句省略形式作主句的条件状语，而且形容词/副词比较级可以更换其它形容词/副词比较级，形容词/副词原级可以更换其它形容词/副词原级主要用于以下句型

句子整体结构：A +谓语动词+形容词/副词（原级），if not +形容词/副词比较级+than, B,

以上整体结构中文意思：“如果A不比B更...A至少和B一样...”

【1】A is as good as, if not better than, B

Mary’s English is as good as, if not better than, Alice’s.

=Mary’s English is as good as Alice’s if her English is not better than Alice’s

【2】A is as tall as, if not taller than, B

Jack is as tall as, if not taller than, Mike

Jack is as tall as Mike if Jack(he) is not taller than Mike.

【3】A is as strong as , if not stronger than , B

Jack is as strong as, if not stronger than, Mike

Jack is as strong as Mike if Jack(he) is not stronger than Mike.

【4】A sings as well as, if not better than, B

Mary sings as well as, if not better than, Alice.

Mary sings as well as Alice if Mary(she) doesn’t sing better than Alice.

【5】A runs as fast as, if not faster than, B

Jack runs as fast as, if not faster than, Mike.

=Jack runs as fast as Mike if Jack(he) doesn’t run faster than Mike.