参加培训课的英语对话

join an English-training agency

take part in a train of English lessons。

Can I join your training session? --- If the people you ask is the people who is the trainerCan I join the training session held by xxx? --- If the peopel you ask is just the approver not the people who is the trainer

参加英语培训课程take an English improvement classetake an English training program

join a training insititution