翻译：“当你阅读时,你的脑海里会有一幅幅图画形成”，“在床上病了将近一个月，他要通过考试比较困难”

There will be a picture forming in your brain when you read.

He will have a hard time passing the exam since he has lied in bed for about one month.

There will be many pictures appear in your brain as you read.
He will have a hard time to pass the exam as he has lied in bed for about a month because of the illness.

There will be a series of pictures when you are reading.
With staying sick in bed for nearly one month,he would have a hard time passing the exam.

when u read,many pictures will appear in ur brain.
Having a hard time on the bed for nearly a month,it's difficult for him to pass the exam.

When you read, your mind will be the formation of a picture
Sick in bed for nearly a month, he has to pass the exam more difficult