《Language in use》English for you and me PPT教学课件

外研版九年级英语下册《Language in use》English for you and me PPT教学课件，共45页。

Learning Objectives

1. To review the usage of adverbial clauses and infinitives.

2. To know more about English and other languages.

3. To make a list of tips for learning English.

Warming up

Guess the meanings of these proverbs(谚语).

1. When in Rome, do as the Romans do.

2. Strike while the iron(铁) is hot.

3. Where there is a will, there is a way.

4. Nothing is difficult if you put your heart into it.

状语从句

1. 定义: 在复合句中修饰主句中的动词、形容词或副词等的句子称为状语从句。

2. 分类：状语从句是由从属连词引导的，按其作用主要可分为时间状语从句、地点状语从句、原因状语从句、条件状语从句、目的状语从句、结果状语从句、让步状语从句、比较状语从句等几类。

状语从句使用要点

使用状语从句有两点要注意：一是状语从句中连词的选用，二是状语从句的时态。

1. 状语从句中连词的选用

状语从句中连词的选用是由句子所表达的逻辑意义决定的，只要知道各种连词的意思和功能就能正确使用。

(1) 时间状语从句的连词：when, while, as, before, after, until, as soon as 等。

e.g. I was watching TV when she came back.

Do it before you forget.

状语从句中连词when和while辨析

when: 既可以和延续性动词连用，也可以和非延续性动词连用。

while: 只能和延续性动词连用；从句中常用进行时态，表示从句的动作与主句的动作同时发生。

连词as的用法

as引导时间状语从句时意为“当……时，一边…..一边；

随着……”。

(2) 地点状语从句的连词：where

e.g. We must camp where we can get water.

(3) 原因状语从句的连词：because, since, as

e.g. Mark could not come because he had to work.

(4) 条件从句的连词：if, unless

e.g. If it ’s not really cold, I will sleep with the window open.

=I will sleep with the window open unless it's really cold.

(5) 目的状语从句的连词：so that, in order that等

e.g. I ’ve brought some photos so that you can see what Britain looks like.

(6) 结果状语从句的连词：so…that, such…that…等

e.g. He got up so late that he missed the first train.

(7) 让步状语从句连词：although, though, even if/though等

e.g. Although he is young, he knows a lot about China.

(8) 比较状语从句连词：than, as等

e.g. He works as hard as his brother (does).

2. 状语从句的时态

在时间状语从句、条件状语从句和让步状语从句中，如果主句表达将来含义，从句常用一般现在时替代一般将来时。

动词不定式

动词不定式是一种非限定动词，通常由“to+动词原形”构成。这里的to是不定式的符号，没有词义，有时还可以省略。动词不定式没有人称和数的变化，在句中不能单独用作谓语。动词不定式的肯定形式是to do，否定形式是not to do。

动词不定式的功能

1. 作主语

不定式作主语时，常用it作形式主语，而将作主语的不定式放在句子后面。

e.g.

It isn ’t right to kill whales for their meat.

= To kill whales for their meat isn ’t right.

2. 作宾语

后接不定式作宾语的常见动词有: want, hope, wish, like, begin, try, need, forget, decide, agree, refuse, afford, manage, promise等。

e.g.

He refused to go there.

She wants to be a doctor.

3. 作宾语补足语

不定式作宾语补足语是指“动词+名词/代词+(to) do sth.” 结构中的不定式。变否定时只需在不定式前加not，其中的to在某些动词后面需省略。

后面可接动词不定式作宾语补足语的常见动词有：ask, allow, warn, tell, invite, force, wish, want, expect, encourage, advise, persuade, permit, order等。

e.g.

She told me ________(buy) a ticket.

4. 作状语

不定式作状语主要用来修饰动词，表示目的或原因等，可以放在句末，也可以放在句首。

e.g.

He got up early to catch the plane to Shanghai.

She is too young to go to school.

5. 作定语

不定式可以修饰名词或代词，在句中作定语，常放在被修饰对象的后面，一般表示物体的用途或者要做的事等。

e.g.

I have a lot of homework to do.

Give me something to eat, please.