英文文法-分詞構句請益2013/4/20 - 考試

不好意思,小弟才疏學淺，想請教各位大大幾題英文文法
(出處:江明翰-二技英文分類題庫)


ex1.
While he was corssing the street, he met an old friend.
= While corssing the street, ...........................
= While being corssing the street, .....................
= Being crossing the street,............................
= Crossing the street,............................


ex2.
Because his son was afraid of snakes, his son went back from the zoo.
= Being afraid of snakes,................................................
= Because being afraid of snakes,......................................
= Afraid of snakes,...................................................
= Because afraid of snakes,............................................


該書僅列出第1句的相等式，而其餘是我列出的，但小弟不太清楚是否皆相等..

ps.該書有指出:1.為使句意清楚，其連接詞可保留!
2.being & having been可省略!

感謝各位大大~

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