participle clauses(分詞分句)
像下面這幾個例子
到底是怎么轉換的 什么變 什么不變
例
after i had done my homework ,i slept for 8 hours
having done my home work,i slept for 8 hours
when you enter the room ,you should say "hi"
entering the room ,you should say "hi"
下面是幾道題 怎么轉變成例子中的形式?
after i settled into my seat,l felt tired.
_______________________________________________
as l sipped aglass of lemonade,i remember thinking "only a couple of hours and i'll be home "
________________________________________________
since i didn't have anything to do at the airport,i took a tirp around the city.
_________________________________________________________
when everybody was getting out of the plane,the didn;t make any noise
________________________________________________
because he wastired,he coulden't wake up after landing
____________________________________________________
as he studied his lessons,he has become one of the top students of the class.
_____________________________________________________
just as he opening class door,the teacher realized that he was escaping.
________________________________________________________
before he didn't tell his name,george recognized him
____________________________________________________
because he hadn't studied his lessons,he couldn't pass the class.
_____________________________________________________
as he was tall,he could join the basketball team.
__________________________________________________________