[解析]
At one station,a big man with cuts on his face got on the train.He sat down across from Adam and looked at him coldly.Since the boy was traveling alone for the first time,he got frightened seeing that man.【高分句型一】So he looked away and tried to sleep.But he couldn't help thinking about that man,especially the cuts on the man's face.He wanted to go and ask the train conductor to change his seat but he feared to tell the conductor his idea.(Adam见到脸上带着伤疤的大个子后的反应)
Then he remembered his father's letter.He put his hand in his pocket quietly and took out the letter.His father had written,"Don't be afraid,my little brave man.Just imagine I am here with you on the train,in the neighbouring car."After reading that letter,the boy's face lit up without any fear.He put back the letter in his pocket,and then put on his headphone.With relaxing music,he soon fell asleep.【高分句型二】(Adam看了父亲给自己写的信后的反应)