我们老师对我们英语方面要求很严格,我直到10点还未回家，英语翻译

这应该是两个独立的句子吧。
1.My teacher is strict with us in English.
2.I didn't go home even if it was already 10 o'clock.

如果是一句话，那么如下：
My teacher is strict with us in English,so I (was busy studying English and)didn't go home even if it was already 10 o'clock.
”我的老师对我们英语方面要求非常严格，（因此）我直到十点还（在忙着学习英语，）没有 回家。“

【公益慈善翻译团】真诚为您解答！

Our teacher is so strict with us in our English study that I don't go home until 10 o'clock.

Our teacher is strict with our English,I didn't go home yet when the time was 10 clock.

同时，我想纠正一下其他几位回答者的错误，not...until是直到...才的意思，而楼主的意思是没有回家···

Our teacher is really strict with our English,and I don't go back home until 10 o'clock.

Our teacher is strict with us English,I don't go home until 10 o'clock.

Our tercher is strict with us in English,I didn't go home until 10