Question

I’m taller now than I was two years ago.这句的I was怎么理解？是省略吗？

这句的I was怎么理解？是省略吗？

Answer 1

这里是省略了taller，其实I was也可以省略。

比较状语从句中的省略
（1）如从句中含有与主句相同的成分，通常仅保留参与比较的部分（即：比较的另一方），省略其他成分。例如：
Steam takes up more space than water (takes).
We are more confident than (we have) ever (been).
（2）如从句中含有先行主语it时，通常省略it和其指代部分（名词性从句或不定式）。例如：
He spent more money than (it) was intended (that he should spend).
You arrived earlier than (it was) usual / necessary (for you to arrive).
（3）比较状语从句中的宾语一般情况下不可省略，如：James enjoyed the movie more than Susan enjoyed it，不能省略it。但是在下列情况中，宾语可以省略。例如：
（A）当谓语动词为动词替代词do时。例如：
He speaks English as well as his teacher does.
（B）当从句含有宾语从句时。例如：
They caught more fish than I had expected (that they would catch ).

Answer 2

I’m taller now than I was two years ago的意思是我现在比两年前高了