"My younger sister goes to school at 11."

Translation: 我的妹妹十一点上学。

[AndrewPfaff]

I think 我妹妹十一点上学 should be accepted since you usually don't need to include 的 when referring to people you are close to.

[vhdcdc]

I think you are right

[CinJinMaanJyu]

You thought right, I reporte it right now because it's still not fixed

[JeffRadcli]

Agree with this comment

[mitochondrion1]

You don't need 的 for family members. Please fix all of your sentences.

[Pifagor6]

Still not fixed. :(

[Cat722536]

I reported the mistake. We don't need "de" for familiars.

[Alison920660]

I keep reporting this too.

[Alexander811328]

Agree with this one,still typo

[AlyssaNoseworthy]

To my understanding, isn't there usually a phrase to articulate whether the 11 is a.m. or p.m.? Are there circumstances where, like here, it is omitted?