《英语》（选择性必修·第三册）
Unit 2 Out of this world
Grammar and usage
I. Learning objectives
By the end of the lesson, students will be able to:
1. identify the u of subject caus;
2. understand the basic rules of subject claus;
3. u subject claus to finish the tasks.
II. Key competence focus
Master the basic rules of subject claus.
电灯胆歌词III. Predicted area of difficulty
U subject claus to finish the tasks.
IV. Teaching procedures
Step 1 Revising the usage of subject in a ntence
T asks Ss to revi the usage of subject in a ntence.
T: The most common subject can be expresd by nouns, pronouns, numerals, infinitives, gerunds, etc. For example:
1. The univer is entirely made up of different kinds of matter.
T: “The univer” is the noun as the subject.
2. To e is to believe.
T: “To e” is the infinitive as the subject.
3. Driving a car to Beijing took longer than I expected.
T: “Driving …” is the gerundial phra as the subject.
【设计意图：理解主语从句首先理解主语，所以从做主语的成分入手，自然地引出主语从句。】
Step 2 Exploring the rules 北京地铁交通图
T asks Ss to go through the part A on page 20 and find the ntences with subject claus.
T: Open your books at page 20 and read through the text. Pick out the ntences with subject claus in the text.
【设计意图：通过发现课文中的主语从句，让学生获得对主语从句的基本认识。】
Step 3 Working out the rules
T asks Ss to work out the rules of subject claus.
We can u a noun clau as the subject of a ntence.
We can u (1)________我的野蛮同学 to introduce a subject clau when the clau is a statement. We can u (2)________ to introduce a subject clau when the clau is a yes-no question. We can u a question word to introduce a subject clau when the clau is a wh-question.
We often u (3)________ as a preparatory subject when a subject clau is very long.
【设计意图：此节旨在通过课文中四个句子，让学生总结主语从句的结构和用法。】
Step 4 Applying the rules
1. Fill in the blanks with proper words (given).
(1) ________ well the policy is working is going to be evaluated天高 by some experts.
(2) ________ is known to us all that the astronomer will come to our school.
(3) ________ mosquitoes need most is blood from man and animals.
(4) It still puzzles us ________ the astronaut didn’t accept the mission揭阳gdp.
(5) It is mysterious to 对不起我错了scientists ________ the strange creature comes from.
(6) So far, how the accident happened and who are to blame ________ (expo) by the mass media.
(7) 屋上乌It was法令纹消除 beyond the wildest imagination ________ they met in the circumstances.
(8) It is unknown ________ he always bothers me with this kind of rubbish.
(9) ________ she can have a day off depends on the administration.
(10) It is still a problem ________ we can find the financial aid to build the telescope.
2. T asks Ss to finish B1.
T: Each ntence below has a mistake. Circle the mistakes and correct them in the blanks.
3. T asks Ss to finish B2.
T: The passage below is about the Chine Lunar Exploration Program. Complete the passage with the correct subject claus in the box below.
【设计意图：本节是主语从句的运用，第1步是有关主语从句在单句中的运用，编写中将本册前面学习的词汇植入到题干中并用斜体标示出来。第2步是主语从句在单句改错中的运用。第3步是主语从句在篇章中的运用。】
V. Homework
Finish B3 on page 21.
