What is the difference between 知道了 and 明白 . . . - HiNative 知道了 (zhī dào le), 明白了 (míng bái le), 好的 (hǎo de), 我懂 (wǒ dǒng) Synonym for 知道了 知道it means that you have known something; for example: 我知道这位教授。 明白了 if your teacher explaning to you something new and in the and ask you: Have you understand? you have to answer: 我明白了or 我懂了。