1.Against humour.
A:Hey,did you hear Professor Smith's lecture yesterday?I heard it was very funny!
B:Hmm?What's so good about that?University's not for fun,we came here to learn.
A:Well,I guess so.Too much humour in an academic class can bring unnecessary distractions,and may cause the students to not take the lessons seriously.
B:Yea,we didn't paid tuition just to listen to jokes...Professor Smith should paid more attention in educating us.
A:I agree.
2.For watching flim at home.
A:Sam,do you want to came to cinema with me?I want to watch .
B:I want to watch it too,but I don't want to go to cinema.Want to rent it and watch it at my house?
A:Why not?
B:The cinema's too crowded,and some people can be distracting,plus you have to wait in line.Renting is so much easier.
A:Yea,I guess so.Let's go then!
3.For space exploration
A:Don't you think that the universe is really fascinating?
B:Yea,that's why I wanted to be an astronaut.-laugh- I wanted to jump on the moon,and discover some foreign lifeforms.
A:Big dreams!But I want to see our astronauts explore the space and discover some new planets.Earth is slowly out of resource.
B:Yea,maybe one day,we can all live on another planet.
4.For the view that women face unequal treatment in getting promoted
B:My mom didn't get the position she wanted again,they promoted some new guy to the job.I think the boss is sexist.
A:That's not fair.In a modern society,one would think that sexual discrimination had long disappeared.
B:However,this is not the case.Although women are given more chances than they had before,many still doubt the ability of women.
A:Yea,especially in a traditional country like China.Some women are still expected to stay at home when they married.
B:It takes time to change.
4.For divorce as the solution to a loveless marriage
A:Did you hear that Professor Sue's getting a divorce?
B:What,why?I thought she really love her husband?They are married for 6 years already.
A:Yea,but I heard that her husband had an affair,and they decided that love no longer exist in their marriage.
B:Wow,so unexpected!I have to agree with her decision though,there's no point of maintaining a marriage if you no longer like each other.This will only cause pain for the both of them.
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I hope you understand them.I'm not sure if you had wanted a connected conversation that involved all these topics,so I broke them down into little conversations.I think you can move them around to make them flow though.Like I would suggest that topic 1 be the first one,and topic 2 be the last one.The middle doesn't really matter.Hope you'll take it.
I can try to give the translations if you need it.