57　帶有連詞或介詞的分詞短語　Track55

 

分詞短語可以用在某些連詞或介詞后面。
（1）連詞+分詞短語
用在連詞后邊的分詞短語作狀語，相當于簡化后的狀語從句保留了連詞。
a. Once deprived of oxygen, the brain dies. = Once it is deprived of oxygen, the brain dies.
一旦缺氧，大腦就會死亡。（once強調時間）
b.Be careful while crossing the road.（while強調時間）
c. After talking to you, I always feel much better.
d. Although exhausted by the walk, he continued his journey.（although強調讓步）
e. Although usually living on or under rocks or on coral reefs, marine snails have been observed in a great variety of habitats.
f. Although still running in a number of cities, the electric trolley has for the most part fallen into disuse.
g. After having annoyed everybody, he went home.
他把所有的人都惹煩了之后就回家了。
h. If seen under a microscope, a fresh snowflake has a delicate six-pointed shape.　如果從顯微鏡下觀察，新降的雪花有纖小的六瓣。
但表示原因的分詞短語前不能加連詞（如 because，for，since，as 等），往往加介詞 with。
i. _______the temperature falling so rapidly, we couldn't go on with the experiment.
A. With
B. For
C. As
D. Since
正確答案：A。
（2）介詞+分詞短語
分詞短語表示伴隨狀況或原因的時候，可加介詞with或without。
a.A car roared past, with smoke pouring from the exhaust.
一輛小汽車呼嘯而過，排氣管冒出一團團黑煙。
b.The old man often takes a walk after supper with his dog following him.
c.She left the party, without a word said .
分詞短語表示時間，可以在分詞前邊加on。
d. On hearing her son's death, the bereaved mother broke out crying. 　一聽到她兒子死亡的消息，這位母親放聲痛哭起來。（on強調時間，相當于as soon as）