duì
Correct
我知道了
I see / got it
It's 我 (I) + 知道 (know) + 了 (particle indicating a change of state). The 了 shows that you've just come to know something, so it means "now I know" or "I've got it."
我明白了
wǒ míngbái le
I understand. — More formal and emphasizes clear comprehension.
我懂了
wǒ dǒng le
I get it. — More colloquial and casual.
知道了
zhīdào le
Got it. — Shorter, without the pronoun.
你明白这个问题吗?
nǐ míngbái zhège wèntí ma?
Do you understand this question?
我知道了。
wǒ zhīdào le.
I see.
Appropriate
Avoid when
You can say "我知道了" (wǒ zhīdào le), which literally means "I now know" and is used to show you've just understood something.
It is pronounced "wǒ zhīdào le" with the third tone on wǒ, first tone on zhī, fourth tone on dào, and neutral tone on le.
Use it when you have just understood new information or instructions. It's appropriate in casual and semi-formal settings.
Tomyo
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