They arrive home early.

他们到家很早。

youdao

She set out in the early morning from Wuchang but did not arrive at my home after two and half an hour.

她清早就从武昌出发，两个半小时还没有到我家。

youdao

If they had left home early this morning, they would arrive in half an hour.

如果他们今天一早就离开家的话，再过半小时他们就该到了。(从句说明过去，主句说明将来。)

youdao

They arrive very early at school and sometimes don't go home until seven or eight at night.

BBC: Gove urges longer days and shorter holidays for pupils