When communicating in Chinese you may often make mistakes using Chinese grammar like:

False:

    我一听，我就明白了。

    Wǒ yì tīng, wǒ jiù míngbái le

True:

    我一听，我明白了。

    Wǒ yì tīng, wǒ míngbái le.

英语可以说I got the idea as soon as I heard it。在汉语里，因为“一……就……”连接两个紧接着发生的动作，前后两个分句的主语用词重复，应该删去第二个“我”。

In English, it is perfect to say “I got the idea as soon as I heard it”. However in the Chinese fixed pattern 一……就…… which joins two events in quick succession, only one among the two clauses requires a subject. 我 in the second clause should be erased.