可以表示时间, 原因, 结果, 条件, 行为方式或伴随动作等。1).Using your head, youll find a good way. Working hard, youll surely succeed.条件状语If you use your headIf you work hard2). Being poor, he couldnt afford a TV set. Not knowing her address, we cant get in touch with her.( 原因)Because he was poorAs we dont know her address3).Walkinginthestreet,Isawatailorsshop.4).Hisfatherdied,leavingthefamilyevenworseoff.时间When I was walking in the street.结果and this left the family even worse off 5) Four people entered the room looking
