Learning about Language优秀教学实录

Unit3

Grammar“it”用法

一．方向探究

A page from Peter's dairy ____ was a sunny day. Peter decided to go for a walk to the park, though _____ was two miles away. ___ was so comfortable to walk on the street. Suddenly ___began to rain. He found __ hard to walk there. Then he took a bus home. Unfortunately ___ went wrong. When he got home, he was wet through. Thus ___ was a day that he would never forget. 二．预习探究

1.

What is this?

It is a cellphone.

2.

What is that? It is his dictionary. 3.

Whose book is this? It is Mr Li’s.

4.

Where is your English book? It is here. 5.

My cat is missing, I can’t find it anywhere. Question: What does “it”

in these sentences refer to? conclusion: it ---词性? ______ 可以用作人称代词，__________________________________ 还可以替代指示代词_____ 或______.

1. It is Friday today.

2. It was very cold last Monday.

3. It is about 8:30 now.

4. It is about 25km from Longxian to Bazi. 5. It lies in the south of Shaoguan city.

6. It is 40°C ! You got a high fever! Question: What does “it”

in these sentences refer to? Conclusion :it 可以用作非人称代词，表示_____,_____,______,______,______,______, 等。

三．自主合作探究（一）

It is obvious that the water was to blame. It is true that he will treat me for breakfast tomorrow. It is certain that our class will do a good job in the final exam. Is it possible that he will become the chairman of our country? It is reported that the President is going to pay a visit to China.

分析：it是______ ,句子真正的主语是____________ 跟踪训练1：It is+ adj. + that从句;

1. 很明显他已经知道了那个坏消息。___________________________________________________ 2. 真的，我一点都不喜欢她的绵羊音。（sheep voice）_____________________________________ 3. 姚明篮球比易建联打得好是肯定的。__________________________________________________ 4. 很有可能火箭队不能进入季后赛（playoffs）_________________________________________ 5. 你应该每天花些时间学英语这很重要。_______________________________________________ 6.很奇怪他今天居然带着那么多钱。______________________________________________________

7.真是令人惊讶袁隆平经常去游泳，而且游得很快。_______________________________________ 8. 你有必要向老师征求一些意见。_______________________________________________________ 自主合作探究（二）

1.It is not easy to stop smoking.

2.It was difficult to quit.

分析，it的作用是_________, 真正主语是_____________. 3.It is no use crying over spilt milk. 4.It is no good smoking . 分析：，it的作用是_________, 真正主语是_____________.构成如下结构：

It is +no use/no good/no need/worth/fun/pleasure+ doing sth.

(记住这些句子哦）

跟踪训练2：It is+ adj./n + to do/doing

1. 在一个小时内完成任务是不可能的。______________________________________ 2. 学好英语要花很长时间。___________________________________________ 3. 对我来说回答这个问题很难。_______________________________________ 4. 你没有参加这个聚会是个遗憾。_____________________________________ 5. 没有必要准备午饭。_______________________________________ 6. 和孩子们玩耍很快乐。_______________________________________ 小结：it 做形式主语

It可以在句中充当形式主语，真正主语可以由______引导的主语从句充当，还可以由______以及_________充当。

自主合作探究(三）

1. I think it important to learn a foreign language. 2. We think it our duty to clean our classroom every day. 分析：S1与S2句型中的it是____________,真正宾语是___________. 建议用6123结构来记忆该结构。

6123结构

We think it our duty to clean our classroom every day. I believe it important keeping notes. He found it difficult that he would finish the task in an hour. 6---主句常用的6个动词---think, believe, make, find, consider, feel. 1---形式宾语it 2---紧跟在it后的宾语补足语，有两种形式，形容词或者名词。

3---真正宾语的三种形式：不定式短语；动名词短语；that引导的宾语从句。

跟踪训练3，用形式宾语连词成句

1. don’t you think/useful/to learn a foreign language/

2. we think/ necessary/to practice oral English/every day/

3. the students/ consider/no use/reading aloud/in the morning/

4. he made/ certain/ she had gone abroad/ 延伸探究：

“it”用于特殊句型中

1.

It + be +被强调部分

+ that/who(a person)从句

写出下列句子的强调句：

I met Tom in the park yesterday.(4个）

She didn’t go to bed until her father came back.(1个) 2.

It is

+时间段+since...

It is three years since I met him in Beijing.

It is five months since I came to New York. 3.

3. It is + +时间段+before...

It will be several years before we meet again.

It was not long before he retuned to Beijing.

How long will it be before he comes back?

It will be long before he comes back. 4. It is the first/second/third...time that sb have/has done sth

It was the first/second/third...time that sb had done sth

It is the first time that I read in public.

It was the second time that I had seen the film. 运用探究：完成相关语法练习