Revision

1、Revise countries and languages

2、Review Grammar: noun clause and finish exercises on page. 28-29

Grammar： Empty subject "It" (形式主语)

1、"it" 在英语中是个很活跃的单词，有许多功能，作形式主语是其功能之一。用"It"作形式主语，主要是因为句子的真正主语较长，为了避免产生头重脚轻的现象才使用的。"It"作形式主语时，有一些惯用句式：

1) 当主语是主语从句时，常用句式：It + be + adj./ n. + 主语从句.

e.g. It is quite important that we study every subject well.

It is my duty that the lights are turned off when we leave the classroom.

It is still a question when and where we will have the meeting.

It's strange that he should be late for the conference.

2) 当主语是不定式短语时，常用句式：It + be + adj. / n. + (for sb.) + to do sth.

e.g. It's necessary for us to obey the school rules.

It's impossible for you to finish the work in two hours.

3) 当主语是表示抽象概念的动名词短语时，常用句式：It + be + adj. / n. + doing sth.

e.g. It's no use / good / useless reading such a book.

4) It is said / known / believed / reported... that .....

e.g. It is said that he was once a thief.

It is expected that we students grasp the English language.

5) It seems(seemed) / looks(looked) / happens(happened) ...that...

e.g. It seems that he has known the answer to the question.

It happened that I had no money on me that day.

It proved that what he said was not true.

6) 当要强调句子的主语、宾语、状语时，可使用句型：

　　It + be + 被强调部分+ that(强调人时也用who) + 余下部分。

e.g. It was I that / who am a teacher.

It was in the cinema that we saw the film.

It was at midnight that the fire broke out.

对比：It was midnight when the fire broke out.

2、Turn to page 30. Read the explanation.

Practice：Finish the exercises on page 31.

Language focus

1、promise：vt. / vi. 允诺、答应

promise sb. sth. = promise sth. to sb.：答应（给）某人某物

e.g. She promised me early return.

My father promised me a computer if I got good marks in the exam. =