学生问：什么叫从句简化变分句？
Tyger举例说明。
L49：
分句：Tired of sleeping on the floor, a young man in Teheran saved up for years to buy a real bed.
从句：Because he was tired of sleeping on the floor, the young man in Teheran saved up for years to buy a real bed.
调整：A young man in Teheran saved up for years to buy a real bed，because he was tired of sleeping on the floor.
L49：
分句：Glancing at the bits of wood and metal that lay around him, the man sadly picked up the mattress and carried it into his house.
从句：After he glanced at the bits of wood and metal that lay around him, the man sadly picked up the mattress and carried it into his house.
无需调整
L50：
分句：Looking round, I realized with a shock that I was the only passenger left on the bus.
从句：As soon as I looked round, I realized with a shock that I was the only passenger left on the bus.
无需调整
L55：
分句：Armed with the new machine, a search party went into the cave hoping to find buried treasure.
简单句(三黄蛋)：The search party was armed with the new maching and went into the cave and hoped they would find buried treasue.
无需调整
L56：
分句：Built in 1885, it was the oldest car taking part.
从句：It was built in 1885, and it was the oldest car which took part.
无需调整
L57：
分句：Glancing at her scornfully, he told her that the dress was sold.
从句：As he glanced at her scornfully, he told her that the dress was sold.
调整：The waiter told her that the dress was sold, as he glanced at her scornfully.
L57：
分句：Not realizing who she was, the assistant was eager to serve her this time.
从句：Because the assistant did not realized who she was, he was eager to serve her this time.
调整：The assistant was eager to serve her this time，because he did not realized who she was.
L65：
分句：Dressed up as Father Christmas and accompanied by a 'guard of honour' of six pretty girls, he set off down the main street of the city riding a baby elephant called Jumbo.
转从句后十分臃肿
L74：
分句：Dressed in dark glasses and old clothes, they had taken special precautions so that no one should recognize them.
从句：As they were dressed in dark glasses and old clothes, they had take special precautions so that no one should recognize them.
调整：They had take special precautions so that no one should recognize them，as they were dressed in dark glasses and old clothes.
L80：
分句：On arriving in England, they were taken to the Crystal Palace by train.
从句：As soon as they arrived in England, they were taken to the Crystal Palace by train.
无需调整
L81：
分句：Working rapidly in the darkness, he soon changed into the dead man's clothes.
从句：He worked rapidly in the darkness and he soon changed into the dead man's clothes.
无需调整
L82：
分句：Realizing that this was no ordinary fish, the fisherman made every effort not to damage it in any way.
从句：Because the fisherman realized that this was no ordinary fish, he made every effort not to damage it in any way.
调整：The fisherman realized that this was no ordinary fish, so he made every effort not to damage it in any way.
L85：
分句：I have just received a letter from my old school, informing me that my former headmaster, Mr. Stuart Page, will be retiring next week.
从句：I have just received a letter from my old school, which informed me that my former headmaster, Mr. Stuart Page, will be retiring next week.
无需调整