用现在分词或过去分词重组句子 As my mother is ill in bed .I can not go to s

第一句：My mother being ill in bed ,I can not go to school.现在分词做状语,但是由于分词主语和句子主语不同,所以要带上自己的独立主语my mother.
第二句：.Peter was waiting for his classmate,standing at the gate.现在分词做状语,表示伴随状态.
第三句：Mike entered the classroom,covered with snow.过去分词做状语,表状态.因为身上的雪是被覆盖的,所以用过去分词,这里省略了BE动词was.
希望能帮你~

Standing at the gate,Peter was waiting for his classmate.
Coverd with snow,Mike entered the classroom .
http://csk7429.blog.163.com/blog/static/3784745420091573048666/
有讲的

my mother having been ill in bed,i can not go to school.
peter stood at the gate,wating for his classmates.
covered with snow,mike entered the classroom.