他已学了足够的德语来进行会话。
He had learned enough German to carry on a conversation.
他自从参加了会话班，法语取得了很大进步。
His French has come on a lot since he joined the conversation class.
在日常会话中，你是请求别人做事，而不是 "命令" 他们。
In everyday conversation, you request people to do things, not "order" them.
