一、重点词汇
考点1． behave vt.& vi. (to act or function in a particular or usual way)举动；(举止或行为)表现
【教材原句】Jane has studied the families of chimps for may years and helped people understand how much they behave like humans. Jane已经研究了猩猩家族很多年了，并
帮助人们理解猩猩有很多方面都像人类一样。
【例句研读】
He behaved badly to the customers. 他对顾客的态度不好。
Most parents like wellbehaved children 多数家长喜欢表现好的孩子． 【归纳拓展】
(1)behave oneself 举止规矩，有礼貌 behave well/badly to/wards sb 对某人态度好/不好 Do behave! 规矩点儿！ Behave yourself! [口语]规矩点儿！ (2)behavior n. 行为；举止 【即时巩固】 单句语法填空：
1.He is old enough _____(behave) himself.
2. They behaved badly _____the guests，which made us disappointed. 3. Tom，behave _____. Have you already forgotten the rules I told you? 4． I was quite pleased with his ________(behave)
【答案】1.to behave 2. to/wards 3. yourself 4. behavior
考点2．worthwhile adj.值得做的; 值得花时间的; 有价值的;
【教材原句】However, the evening makes it all worthwhile. 然而那天晚上使一切都值得了 【例句研读】
1. That was a worthwhile trip. 那是很有价值的旅行。 2.The problem is worth discussing. The problem is worthy to be discussed. The problem is worthy of being discussed. It is worthwhile to discuss/discussing the problem.
这个问题值得讨论一下。 【归纳拓展】
It's worthwhile doing sth.(1)It's worthwhile to do sth.值得做某事 be worth＋n.值得……(2)be (well worth doing sth.(很值 of being done(3)be worthyto be done值得做 【即时巩固】
Hangzhou is a beautiful place，and it is worthwhile _____(go)there. 【答案】to go / going
考点3．observe vt.观察；观测；遵守；庆祝
【教材原句】She spent years observing and recording their daily activities.
她花了多年的时间来观察并记录它们的日常活动。 【例句研读】
The police observed the man entering/enter the bank.警方监视着那男子进入银行的情况。 We cannot always observe the traditions handed down to us from the past. 我们不能永远遵守过去传下来的传统。 【归纳拓展】 observe sth.观察某物 observe sb. do sth.观察某人做某事(全过程) observe sb .doing sth.观察某人正在做某事
observe that...观察…… 【即时巩固】
1 The patients ____(observe)over a period of several months.
2 The scientist devoted most of his lifetime to __________(observe) the behavior of the chimps.
【答案】1. Were observed 2. Observing
考点4．argue vi.& vt.讨论，争论，争辩，说服，用辩论证明
【教材原句】She has argued that wild animals should be left in the wild and not used for entertainment or advertisements.
她主张应该让野生动物留在野外生活，而不应用于娱乐或广告 【例句研读】
Columbus argued that the earth was round. 哥伦布认为地球是圆形的。
They are arguing with their classmates about the solution to the problem. 他们正在就这个问题的解决方法和同学争论。 【归纳拓展】
argue against争辩(反对…… (1)argue with sb. on/about/over s (2)argue sb. into/out of doing sth.说服某人做/不做某事 (3)argument n．争论；争辩；论点 The workers，who argued for their own rights，argued with the boss for a few days，but failed to argue him into giving them a rise in wages.
为了自身的权利争论的工人们同他们的老板辩论数日，结果没能说服老板给他们加薪。 【即时巩固】