A：What do you think of your teacher?
你觉得你的老师怎么样?
B：He's very strict with us.
他对我们要求很严。
A：And I hear he gives very good lectures.
我听说他讲课很好。
B：Indeed. He's strict with himself too. We can see every lecture of his is well-prepared.
确实是这样，他对自己要求也很严。我们能看出他每次讲课都做了精心准备。