分词做状语需要注意的一个问题： 分词与句子主语的逻辑关系 Seeing from the hill , the city looks beautiful. （错误） Seen from the hill , the city looks beautiful . （正确） Seeing 与the city 不是主谓关系；seen 与city 是动宾关系
悬垂分词： considering speaking supposing judging providing
Judging from his accent, he is from Shanghai.
练习：
1.After seeing the movie, ___________.
A. the book was read by him
B. the book made him want to read it
C. he wanted to read the book
D. the reading of the book interested him
2.______ the room, a letter was laid on the ground.
A. Entering
B. Having entered
C. He entered
D. Mrs Green entering
3. ______ her mother had come, her face lit up.
A. Hearing
B. Having heard
C. When hearing
D. When she heard
4. Oil prices have risen by 32 percent since the start of the year, _____ a record US $57.65 a barrel on April 4. （山东）