"You wrote it wrong."

Translation: 你写错了。

[Ben-Sydney]

Is "你写了错" grammatically incorrect? is it idiomatic?

[Keith_APP]

It is incorrect, and it is not idiomic.

[TaylorLSho]

Up until writing this sentence wrong (ironic ), I was under the impression that it was okay to place 了 immediately after the verb when indicating action completion. In fact, I'm pretty sure that every quiz question I've encountered on Duolingo up until this point has accepted English-to-Chinese translations utilizing 了 in this way. Unfortunately, as it turns out, sentences must satisfy one of several criteria for this pattern to be permissible. What those criteria are can be found here: https://resources.allsetlearning.com/chinese/grammar/Expressing_completion_with_%22le%22#Putting_.E4.BA.86_After_a_Verb_with_an_Object

[MrK_Ct]

I don't understand the use of le. Sometimes it is in the sentence and sometimes at the end. How do I know where to put it?

[uiF85]

你写错 is also grammatically correct.

[RaynaLThompson]

It's grammatically correct, but it doesn't have the same meaning. Adding 了 makes it past tense, "wrote".

[AlecChampa]

There are no tenses in chinese, and the use of 了 is far more complex than that. Whether or not to add 了 to mark an action as completed is very dependent on context.

[RachelHe8]

It is incorrect. You should hear the words carefuly