英语翻译But when Armstead arrived home from work that first nigh

主句she found a bunch of tough-looking young men sitting on her front steps .
主语she ,found谓语,
a bunch of tough-looking young men 宾语,
sitting on her front steps,现在分词当宾补,这种复合结构通常出现在感觉动词中,如see,watch,notice,observe,如果是不定式,通常省TO.
on her front steps ,是介词短语当sitting的地点状语,表示坐在她的前门台阶.
young men 是复数形式,因为a bunch of 表示一伙,
从句when Armstead arrived home from work that first night after moving in 由表时间的连词when引导.
主语Armstead,
arrived谓语,
from work 介词短语当地点状语.表示从工作回来.
that first night after moving in .是当从句的时间状语,（ when 引导的前半句是主句的时间状语）
that形容词
after moving in ,是介词after 做night的定语,指的是搬进去的那一晚.
因为是介词,所以动词move用分词形式,in 在这里是副词修饰move,不是介词,
当那个她搬进的一个晚地方,
下班回到自己刚刚搬入的住所的那一晚,Armstead发现一伙长相粗暴的年轻人坐在她家的前门台阶上.

“when Armstead arrived home from work that first night after moving in”是状语从句
"that first night after moving in"是 home的定语从句
she主语
found 谓语
“a bunch of tough-looking young men sitting o...

when Armstead arrived home from work that first night after moving in
时间状语从句
that first night after moving in
定语，修饰home
men sitting on her front steps
是双宾语，其实men是直宾语，...