高中英语It用法导学案()

The Use of “It”

1. Try to master the use of it..

2. Try to learn by heart some useful sentence structures.

1. The functions of “It” used in the subject or object position to stand for an infinitive, -ing form or a clause.

2. Master the use of “It” for emphasis in a sentence.

“it” used in emphatic sentence and the other clauses.

Step1: 高考考点分析

1. it 用作代词

2.it 的常见句型（用作形式主语、形式宾语）

3. it 用于强调句型

Step 2: Grammar

Task1: Review the impersonal “it” and give some examples.

1. It用作人称代词,代替___________________.

My watch is missing. I can’t find it anywhere．

2. 代替指示代词__________________。

What’s this? It’s a computer．

3. 表示_______________________________________________________等。

It is a lovely day, isn’t it?（it 表示什么？）____________________

Task 2: Try to learn by heart some useful “it” structures.

1.“It” can be used in the subject position to stand for______________________.

列出it 做形式主语的常用句型并举例:

①It is /was ______________________to do sth.

___________________________________________________________.

___________________________________________________________.

在It is/ was + adj.+of sb. to do sth.句型中的形容词必须是能表示_________________的形容词，常见的有_______________________________________

_______________________________________________________________________等。

②.It is /was + adj.+ that...

It is clear (obvious，true, possible，certain…) that…

It was clear that he was lying to us.

It is important (necessary，right，strange，natural…)that主语+ + .

小组结论：掌握本句型，应该记住所列举的形容词，并且记住that后的从句应用虚拟语气(should+动词原形)，should可以省去。

（翻译）学好英语对我们来说是很重要的。(用两种句型翻译)

___________________________________________________________________________

③.It is + V~ed + that... （列出用于这个句型的过去分词）

注意：本句型中的过去分词如果是表示_______、________、___________时，（例如_________________________________________等词)that后的从句要用虚拟语气，(也就是_________十________)，should可以省略。

④It is useless/no use/no good + __________ sth.

(翻译) 跟他争论没用。_____________________________________________.

⑤It be +名词词组+that 从句或不定式(列出常用的名词词组)

It be + __________, ___________, ____________, __________, ___________, ___________, ____________, ___________等+从句

It’s a fact that he failed the exam.

It’s an honor for me to work with you.

2. It引导的时间句型

⑥It +be+时间+since 从句自从…...以来已有（时间）

(翻译)1. 自从他来这个城市工作已有两年时间。

_________________________________________________________________

2. 自从他定居上海到现在已经有15年了。

_________________________________________________________________

⑦It +be+时间+before 从句（这个句型中的时间一般为表示一段时间的词语。）

It was four hours before the fire was put out. ___________________________

It won’t be long before we meet again.______________________________

⑧It is +时间+when 从句当……的时候是……时间了

(翻译) 昨天我回到家里已经是半夜了。

_________________________________________________________________

⑨It is (high) time (that) 主语+__________ _________ /________ sth.

It’s high time (that) we handed/should hand in our exercise books.

⑩It /This /That + the first (second, third…) time that-clause 从句中应该用什么时态____________________________。

3. “It” can be used in the object position.

⑾主语＋谓语(feel,make,think,consider，know, find,suppose等）+ it +adj./n.+ to do sth. / doing sth./ that-clause

We consider it a great honor to be able to host the 2008 Olympic Games.

I found it no use crying for help.