Todavía no he terminado mi informe.

I have not finished my report yet.

Breakdown of Todavía no he terminado mi informe.

• yo: I
• mi: my
• el informe: the report
• no: not

Questions & Answers about Todavía no he terminado mi informe.

Why is the present perfect (he terminado) used instead of the simple past (terminé)?

In Spain, the present perfect is preferred for actions connected to the present or within the current time frame. With todavía (still/yet), the connection to “now” is explicit, so Todavía no he terminado is the natural choice. In much of Latin America you’ll often hear Todavía no terminé, which is normal there, but in Spain it sounds odd because it frames the action in a completed past period, contradicting the idea of “still not.”

Can I say No he terminado todavía instead of Todavía no he terminado?

Yes, both are correct.

• Todavía no he terminado slightly foregrounds the idea of “still.”
• No he terminado todavía is stylistically very common in conversation.
  You cannot separate no from the conjugated verb: avoid forms like Todavía he no terminado (wrong).

What’s the difference between todavía, aún, ya, and ya no?

• todavía = still/yet: Todavía no he terminado (I haven’t finished yet).
• aún = still/yet (synonym of todavía, a bit more formal/literary): Aún no he terminado.
• ya = already/now: Ya he terminado (I’ve already finished).
• ya no = no longer/anymore: Ya no trabajo en eso (I don’t work on that anymore).

Where does the negative go in compound tenses?