"Do you have time this afternoon?"

Translation: 你今天下午有时间吗？

[JaviFontal]

Another alternative. 你今天下午有空嗎 Ni jintian xiawu you kong3 ma

[Katariq]

:o

[BarAdal3]

空 in this context is used to convey the meaning "to be empty", right?

[jamawn]

it means are you free

[Xinmei20]

你这个下午有没有时间?

[carsenyoung]

This is what I put too. Can anybody explain why this is not a correct option?

[AbunPang]

The problem is with *这个下午. While it is understandable what you mean, people just don't say it that way (it is permissible in some non-Mandarin local languages, but not in Standard Chinese or an other variant of Mandarin I have encountered so far). You say 今天下午 "today afternoon". And similarly for other days or times of day: 昨天晚上, 明天中午, 那天早上 etc.

[SzymonRuci]

would 有空 sound more natural in this case?

[yuxqii._]

you think that you are improving and then duo pulls the reverse card on you

[Jocke190028]

你 can also be omitted, but duolingo wont accept it

[KhiemPokem]

Yeah

[domsalazar0]

Lol, the audio plays the English sentence instead of the Chinese one

[maartendoc]

时 (shí) = o'clock/time
间 (jiān) = between/among/room
时间 (shíjiān) = time/period