[例1]The shy girl never speaks unless______.
A.speaking B.spoken C.speaking to D.spoken to
【解析】答案D。“連詞unless+過去分詞”結構組成句子成分，此處表示條件，“這個害羞的女孩從不說話除非別人先主動跟她說”。
[例2]Though______of the danger，he still went skating on the thin ice.
A.warning B.to warn C.warn D.warned
【解析】答案D。本題也考查“連詞+過去分詞結構”，though引導表示讓步，“盡管別人警告他危險，他還是繼續在薄薄的冰上溜”。
[例3]______in England，Anne Bradstreet both admired and imitated several English poets.
A.Having born and educated B.To be born and educated
C.Since born and educated D.Born and educated
【解析】答案D。過去分詞作狀語，表示原因，“出生在英國，並且也在英國接受教育，Anne Bradstreet羨慕英文詩歌並模仿了幾首”。
[例4]—How do you deal with the disagreement between the company and the customers？
—The key______the problem is to meet the demand______by the customers.
A.to solving；making B.to solving；made
C.to solve；making D.to solve；made
【解析】答案B。本題第一個空考查the key to短語，該短語後應加動詞-ing作賓語表示“做某事的關鍵”，第二個空用過去分詞作後置定語，修飾demand。“你們怎麽處理公司與顧客的關係？解決這個問題的關鍵是滿足顧客提出的需求”。
[例5]The film you saw last night was made______on a true story that happened many years ago.
A.base B.to be based C.based D.basing
【解析】答案C。本題考查過去分詞作賓語補足語的句法功能，“昨天晚上你看的那部電影是基於很多年前發生的一個真實的故事”。
[例6]Just as the value of a telephone network increases with each new phone______to the system，so does the value of a computer system increase with each program that turns out.