英语选择性必修三第一单元第二单元思维导图

这是一篇关于英语语法写作的思维导图。详细阐述了写作方法和动词不定是做主语的基本用法。写作的结构，句子，阅读等。

BOOK3

UNIT2

WRITING

A LETTER TO THE EDITER ABOUT YOUR LIFESTYLE

结构

介绍写信的目的。

介绍如何保持健康

结果

内容

.健康生活的必要性、重要性。

指出目前存在的不利于健康的问题。

健康生活方式:加强锻炼、注意饮食、均衡营养、养成良好的生活习惯等。

最后的结果（现状）

核心词汇与常用表达

1.Having a good diet is very important. 2.Eating lots of fresh fruit and vegetables means a lot to our body. 3.Doing exercise is another good way to keep healthy/ficom 4. Running is the best workout for weight loss because it’s cheap 5.It is important to ask your doctor for a health check once a year 6.Going to bed early and getting up early is also very important. 7.To keep healthy, we’d better cut down on fat and sugar in our diets. 8. It is bad for your health to stay indoors for a long time

1.保持健康keep healthy 2.保持平衡饮食keep a balanced diet 3.停止做 cut out 4.锻炼work out 5.减少压力re/wenk 6.即使even if/though

GRAMMAR

动词不定式作主语

基本用法

动词不定式作主语时，谓语动词用单数

To look after these naughty boys is really difficult照看这些淘气的男孩真的很难

为了避免头重脚轻，常用it作形式主语放在句首，作主语的不定式常置于句末。

It would be better for you to go there. 你还是去那里的好。

动名词和不定式作主语的相同点

不定式和动名词作主语时，常常为了保持句子的平衡，用 it 来作形式主语

It is not easy to learn English well学好英语不容易。

It is no use asking him forhelp向他求助是没有用的。

如果主语用了不定式，表语和宾语也要用不定式;主语用了动名词，表语和宾语也要用动名词，这在英语中称为对称性

To see is to believe.=Seeingis believing.眼见为实。

It is better to stay home than to go out.待在家里比出去要好。

动名词和不定式作主语的不同点

不定式作主语常表示具体的某一动作;表示泛指或一般的抽象的概念时，多用动名词。

Walking is a good form ofexercise for both young and old.散步是一种老幼皆宜的很好的运动形式。

在“It+be+nouse(good/help/need”之后常用动名词作主语，而少用不定式。

It is no use crying over the split milk覆水难收

It is no help taking this medicine.服用这种药没有用。

注意:如果该句型中用了for引出不定式的逻辑主语，就只能用不定式。

It is no good for us to do that exercise. 我们做那种练习没有好处。

不定式可以和when，where，how，what，whether等连用，在句子中作主语、宾语和表语:而动名词则不能。

Where to put the box seems hard to decide.很难决定把这个箱子放在哪里。

Whether to do it hasn’t been decided.是否做这件事还没定下来。

READING

句子

Being a volunteer is the right thing I have been looking forward to doing

That’s why we must train hard this time

I was impressed by the festival held by our school last year

结构

phenomenon: why teenagers should change their bad habits

what is habit and the cycle of habits worked

how to change bad habits and build a good habit

no easy way to change bad habits

UNIT1

WRITING

announcement

结构

介绍通知目的

介绍这次展览的精彩部分及注意事项

表达祝愿

内容

大体介绍展览内容

交代清楚本次展览的时间、票价等细节信息

强调参加此次展览要注意的事项

表达祝愿

核心词汇与常用表达

1. There is an interesting exhibition next Sunday. 2. Some of the paintings are made by some... 3. The highlight of this exhibition is the... 4. The exhibition will be on from...to... 5.Admission:…for adults;for children... 6. No photos or food and drink are allowed in the museum. 7.Hope you will enjoy it.

1.被公认为……be recognized as... 2.和……一样……as....as... 3.被允许做某事beallowedto do sth 4.等待wait 5.玩得快乐have fun

GRAMMAR

动词不定式作表语

表目的

The next step is to make sure that you know exactly what is required下一步是确保你确切知道需要什么。

表示事态发展的结果，预期的结果，不幸的命运或预言

That experience was to change hiswhole life那次经历会改变他的整个生活。

用于第一人称疑问句，表征求意见

What am I to say if they askme the question?要是他们问我这个问题，我该怎么回答呢?

用于被动语态，相当于can/could，should，oughtto，must，具有情态意义

You are to berewarded.你应该受到奖励。(should) It's nowhere to befound.哪儿也找不到它。(cantbe) These books are not to be sold.这些书不应该卖掉。(ought not to be)

表示 同意、安排、命令、决定、劝告、意愿、禁止"等。

They are to marry next week.他们将在下周结婚。(安排)

6.不定式作表语，可用主动形式表示被动意义。

She is to blame.她应该受到责备。

READING

句子

The festival is so wonderful that it attracts a lot of students each year.

While you are busy,you’d better spare more time totrain

结构

The middle age

Focus on christianity.

Grotto di Bondone

The Renaissance

The use of perspective and oil paint

Painters

Impressionism

Modern Art