People are puzzuled the first time they read the book.the first time,at the first time,for the first time
【the first time】直接就是一个连词,前面不需要加任何介词的
People are puzzuled the first time they read the book.the first time,at the first time,for the first time
【the first time】直接就是一个连词,前面不需要加任何介词的