正确的：
1、He,with his friends,is playing basketball；
2、He,with his friends,plays basketball.
不切当的：
He is ,with his friends,playing basketball.
【is 与playing不应断开,不合英文的书写习惯.断开,语法、语义不清楚.】
正确的：
1、He,with his friends,is playing basketball；
2、He,with his friends,plays basketball.
不切当的：
He is ,with his friends,playing basketball.
【is 与playing不应断开,不合英文的书写习惯.断开,语法、语义不清楚.】