discuss/discussion/debate/argue/argument/controversial/quarrel/quarrelsome
记忆：
1. discuss [ dis5kQs ] vt. 讨论, 论述。 We will discuss the suggestion at the meeting.我们将在会上讨论这个建议。注意：discuss是及物动词，discuss something中不要受汉语影响加about.
2. discussion [ dis5kQFEn ] n. 讨论 They reached an agreement at the end of the discussion.他们在讨论结束时达成了一致。
3. debate [ di5beit] de-bate n. & n. 争论, 辩论 Is it true that Chinese may quarrel bitterly in the everyday life while debate little at the national congress?中国人在日常生活中吵得不可开交，而在全国大会上却难发一言，这是真的吗？
4. argue [ 5B:^ju: ] vi.争论, 辩论 The truth can stand heated arguing.真理越辩越明。
5. arguable [ 5B:^juEbl ] adj. 可辩论的, 可论证的 The theme of the sports meeting is arguable.大家可以讨论运动会的主题。
6. inarguable [ in5B:^juEbl ] adj. 不容争辩的, 没有疑问的 In my opinion, his honesty is inarguable.我认为，他的诚实是不容争辩的。
7. argument [ 5B:^jumEnt ] n. 争论, 辩论, 论据, 论点 What did he produce to support his argument?他拿什么来支撑他的论点？
8. controversial [ 7kCntrE5vE:FEl ] contro-vers-ial adj.争论的, 争议的 The issue of Jewish settlement is quite controversial and has caused much trouble.犹太人定居点问题是颇有争议的，而且已经引起了相当的麻烦。
9. quarrel [ 5kwCrEl] n. 吵架 vi. 吵架 Never have their neighbor heard them quarreling.他们的邻居从未听到他们争吵过。 It takes two to make a quarrel.一个巴掌拍不响。
10. quarreler [ 5kwCrElE] n. 争吵的人, 喜欢埋怨的人 Keep quarrelers off and you will have a more pleasant life.远离那些爱争吵的人，你会生活得更愉快。
11. 加形容词后缀-some, quarrelsome [ 5kwCr(E)lsEm ] adj. 喜欢吵架的, 好争论的 Both the couples are quarrelsome. So their neighbors couldn’t have had a quiet life since they moved in.两对夫妇都爱吵架。自从他们搬过来后他们的邻居再也没有宁静的日子了。
另类阅读：
At the discussion, they discussed the picnic, arguing their own arguments and even quarreling as every one of them were quarrelsome. The heated debate reached no agreement in the end.

轻松一刻
Teacher: Why are you late?
Student: Because of the sign.
Teacher: What sign?
Student: The one that says, "School Ahead, Go Slow."