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Unit 2 Out of this world
Grammar and usage（教学设计）
I. Learning objectives
By the end of the lesson, students will be able to:
1. identify the use of subject causes;
2. understand the basic rules of subject clauses;
3. use subject clauses to finish the tasks.
II. Key competence focus
Master the basic rules of subject clauses.
III. Predicted area of difficulty
Use subject clauses to finish the tasks.
IV. Teaching procedures
Step 1 Revising the usage of subject in a sentence
T asks Ss to revise the usage of subject in a sentence.
T: The most common subject can be expressed by nouns, pronouns, numerals, infinitives, gerunds, etc. For example:
1. The universe is entirely made up of different kinds of matter.
T: “The universe” is the noun as the subject.
2. To see is to believe.
T: “To see” is the infinitive as the subject.
3. Driving a car to Beijing took longer than I expected.
T: “Driving …” is the gerundial phrase 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
T asks Ss to go through the part A on page 20 and find the sentences with subject clauses.
T: Open your books at page 20 and read through the text. Pick out the sentences with subject clauses 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 clauses.
We can use a noun clause as the subject of a sentence.
We can use (1)________ to introduce a subject clause when the clause is a statement. We can use (2)________ to introduce a subject clause when the clause is a yes-no question. We can use a question word to introduce a subject clause when the clause is a wh-question.
We often use (3)________ as a preparatory subject when a subject clause 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 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.
(5) It is mysterious to scientists ________ the strange creature comes from.
(6) So far, how the accident happened and who are to blame ________ (expose) by the mass media.
(7) It was 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 sentence 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 Chinese Lunar Exploration plete the passage with the correct subject clauses 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.

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