2019外研版高中英语必修三Unit1 高频词汇课件(三)

1 / 4 Unit6 主题词汇记

词根词缀词汇拓展

serve v. 服务;服役;供应;提供

1. 词根:-serv-表示“服务;保持”

2. 词汇拓展

①service n. 服务

The volunteers for community service are doing a good job.

社区服务志愿者的工作做得很出色。

②servant n. 仆人;雇员

He keeps two servants, a cook and a gardener.

他雇有两个佣人，一个厨师和一个园丁。

③deserve v. 应受，值得

You deserve a reward for being so helpful.

你帮了这么大的忙，理应受到奖励。

④conserve v. 保存;保护;节省;节约

It is important to conserve energy.

节约能源十分重要。

⑤conservation n. 保护；保存；保持

Our community is a leader in the conservation of wildlife.

我们社区在野生动物保护方面走在前头。

⑥conservative adj. 保守的

Old people are usually more conservative than young people.

老年人通常比年轻人保守。

⑦observe v. 观察;遵守

We have to observe carefully what’s going on there.

我们必须仔细观察那里发生了什么。

⑧observation n. 观察

He is a man of little observation.

他是个观察力极差的人。 2 / 4 ⑨preserve v. 保存，保鲜

Fish are preserved in ice and salt until they are sold.

........

........

[语法初识]

原句感知 自主探究

①People tend to love agricultural

products grown without the use

of

fertilizers, pesticides or chemical

additives.

②This project designed to help

landless people just didn't work out as

planned.

③They are cleaning the fallen leaves in

the yard.

④We saw abandoned farms which were built

more than a hundred years ago.

⑤He smoked many cigarettes a day until

he gave up.

⑥I broke my relationship with John

because he always found fault with me. 1.①～④句中的过去分词(短语)在句中作定语。

2．①②句中为过去分词短语作定语，放在所修饰的名词之后，相当于一个定语从句。

3．③④句中为单个过去分词作定语，常放在所修饰的词前面。

4．⑤⑥句中谓语动词用过去时，表示动作发生在过去。

5．一般过去时常与表示过去的时间状语或从句连用，如句⑤。

6．一般过去时也可以表示过去习惯性、经常性的动作，与often, always等连用，如句⑥。

[语法剖析]

语法点一 过去分词作定语的位置

1．过去分词作定语的位置 ........

........ 单个的过去分词作定语通常放在被修饰词之前，分词短语作定语则放在被修饰的词之后。过去分词短语有时还可以作非限制性定语，前面常用逗号与被修饰的成分隔开，相当于一个非限制性定语从句。

1 / 5 Unit1 主题词汇记

词根词缀词汇拓展

sink v使（船）沉没

1. 词性转换：一个词不变其词形，而是由一种词类转化为另一种或几种词类。

sink v.使（船）沉没→ sink n.洗碗槽

2. 词汇拓展：

① battle v搏斗，战斗；奋斗→ battle n.战役；搏斗，战斗

Doctors battled to save his life医生们奋力挽救他的生命。

She has fought a constant battle with her weight她一直在和自己的体重作斗争。

② crowd vi.挤满；使厖拥挤；涌入（脑海）→ crowd n.人群；一伙人

A vast crowd gathered in the main square.

大群人聚集在主广场上。

Holiday makers crowded the beaches海滩上挤满了度假者。

③ tear 1.撕开；撕裂→ tear n眼泪；泪水

He tore the letter in two.他把信撕成两半。

A tear rolled down his face滴眼泪顺着他的面颊流下来。

④ concern ut影响；涉及；使担心→ concern n.忧虑，担心

What concerns me is our lack of preparation for the change.

让我担心的是我们对该变化缺乏准备。

In the meeting，voters raised concerns about health care.

选民在会上提出了对卫生保健状况的担忧。

⑤ signal.发信号→ signal n.信号；暗号

Don’t fire until I signal.等我发出信号后再开枪。

We don't want to give out the wrong signal to investors.

第1页（共4页） 人教新课标必修三 词汇 第二讲 （unit4-5）--

1. permit v 允许；n. 许可证

• He has to apply for a permit, and we have to find him a job.

• Try to go out for a walk at lunchtime, if the weather permits.

2. by accident= by chance =by mistake偶然，无意，碰巧

• I met him by chance out walking yesterday.

• Whether by design or accident his timing was perfect.

3. stare v/n. 盯视

• Ben continued to stare out the window.

• Steven gave him a long, cold stare.

4. spot n. 点；景点；v 发现

They stayed at several of the island's top tourist spots.

He left the party seconds before smoke was spotted coming up the

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5. account账户 on account of= because of account for=be responsible for

• A newly-married couple, he thought, on account of their walking so

close together.

• The President and the President alone must account for his