高中英语外研版 (2019)选择性必修 第一册Unit 4 Meeting the muse示范课ppt课件

动词不定式、动词­ing形式和动词­ed形式作表语

[观察例句]

观察下列句子，指出黑体部分的动词形式及语法作用。

1．The look on his face showed that he felt astonished.动词­ed形式作表语

2．My special hobby is collecting stamps.动词­ing形式作表语

3．He is more interested in science than in art.动词­ed形式作表语

4．My job is teaching English.动词­ing形式作表语

5．Our next aim is to help farmers increase food production.

动词不定式作表语

6．Your task today is to wash the curtains.动词不定式作表语

[归纳用法]

一、动词不定式作表语

动词不定式可在句中作表语，常用来表示按计划或安排将要发生的动作或用来解释主语的内容。

My wish is to be a doctor when I grow up.

我的愿望是长大后当一名医生。

What I love best now is to have a relaxing holiday.

我现在最喜欢的是有一个轻松的假期。

[即学即练1]　单句语法填空

①The purpose of new technologies is to make(make) life easier.

②My task is to show(show) you around our newly­built library.　

③He seems to have been(be) to Paris.

④Her wish is to become (become) an engineer.

二、动词­ing形式作表语

1．说明主语的性质、特征等。常见的有：moving，interesting，encouraging，exciting，inspiring，boring，surprising，puzzling，amusing，astonishing等这类词有“令人……的”的含义，常修饰物。

The argument is very convincing.

这个论点很令人信服。

Your speech is very interesting and encouraging.

你的演讲很有趣而且很鼓舞人。

2．表示抽象性的或习惯性的动作，一般说明主语的内容。

Her job is keeping the lecture hall as clean as possible.

＝Keeping the lecture hall as clean as possible is her job.

她的工作是保持报告厅尽可能的干净。

The first and most important step in the treatment of burns is giving first aid.

治疗烧伤的最初也是最重要的一步是施行急救。

三、动词­ed形式作表语

1．动词­ed形式作表语时，表示主语的特征或所处的状态。

The road was lined on both sides with trees.

道路两旁都种着树。

Train fares are likely to remain unchanged.

火车票价很可能会保持不变。

2．某些动词­ed形式作表语，表示人物所处的心理状态或感情变化，其主语多为人。

这类词又可以被看作是形容词，表示“感到……”，可以被very修饰。常见的有：delighted(感到高兴的)；discouraged(感到泄气的)；astonished(感到震惊的)；frightened(感到害怕的)；excited(感到激动的)；interested(感到有趣的)；pleased(感到高兴的)；puzzled(感到迷惑的)；surprised(感到惊讶的)等。

She looked very excited.她看起来很激动。

He is very interested in English films.

他对英语电影很感兴趣。

四、动词­ed形式作表语与被动语态的区别：

前者构成系表结构表示主语的特征或所处的状态，后者表示一个被动动作。

The novel is well­written.

这部小说写得很好。(系表结构)

The novel is written by Lu Xun.

这部小说是由鲁迅写的。(被动语态)

[即学即练2]　单句语法填空

①Going into the wilderness can be frightening(frighten)．

②His only aim is to earn(earn) money to support his family.

③I feel a little embarrassed(embarrass) but I'd really like to meet you.

④Her exam results were disappointing(disappoint)．

Ⅰ.单句语法填空

1．The pupils will feel confused (confuse) if they are made to learn too much.

2．The next step is to make (make) sure that you know exactly what is required.

3．The purpose of education is to develop (develop) a fine personality in children.

4．Tom seems interested (interest) in the job，but I'm not sure whether he can manage it.

5．If a story is exciting，you are excited when you read it.(excite)

6．It remains to be seen (see) whether or not she was lying.

7．Mr. Smith，who was tired (tire) of the boring speech，started to read a novel.

8．The pilot asked all the passengers to remain seated (seat) as the plane was making a landing.

9．All I did was (to) give(give) him a little push.

10．The development of our aviation industry is quite encouraging(encourage)．

Ⅱ.短文语法填空

Yuan Longping is known as the“father of hybrid rice”．He graduated from college in 1953，when many people in China were suffering from hunger，which was 1.disturbing (disturb)．He thought that the key to feeding people was 2.to have (have) more rice and 3.to produce (produce) it more quickly.After years of hard work，he and his team finally succeeded in developing the first hybrid rice that could be used for farming in 1974.The whole nation was 4.excited (excite) at his success.His hybrid rice was also exported to other countries，helping more people to get rid of hunger.

Dr.Yuan's another dream was 5.to develop (develop) a new vision called “seawater rice”．In 2000，his dream came true.At that time，the whole world was 6.shocked (shock) at the news.