青云翻译

Some teachers are very enthusiastic on-line learning (enthusiastic), and how some teachers have not positive. (Use "while" to introduce information that contrasts with the main clause)

Some very enthusiastic teacher online learning (enthusiastic), while other teachers were very positive about this. (use "while" to introduce information that contrasts with the main clause)

正在翻译，请等待...

Some teachers of online learning is very warm (enthusiastic teachers), on the one hand, and they haven't actively. (Use "while" to introduce information that contrasts with the main clause)

Some very enthusiastic teacher online learning (enthusiastic), while other teachers were very positive about this. (use "while" to introduce information that contrasts with the main clause)