I was doing my homework when my mother came back.

当我妈妈回来时，我正在做作业。

youdao

I waited until my mother came back.

我一直等到母亲回来。

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I had written my report before my mother came back.

我母亲回来之前，我已写完我的报告。

youdao

And until my grandmother passed away at 12, that is when my mother came back, came to get me because I had nothing but my grandfather there in the house and my mother wanted me to be with her.

NPR: Etta James: Still Singing Her Song

Then my father went on a winter holiday to Cuba (my mother remarked on this with some surprise and maybe approval) and came back with a lingering sort of flu that caused the visits to lapse.

NEWYORKER: Gravel

There he was, my handsome brother, walking toward us, seemingly unchanged, until he came close enough for my mother to hug him, and I saw him wince and back away his arm was covered in soft-looking welts.

NEWYORKER: Cell One