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高二英语Astronomy教案

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2013-04-02

to come: serves as attributive

She is the last person to do such a thing.

depend on: something might only happen or be true if the circumstances are right for it

Our success depends on whether everyone works hard or not.

4. Walking does need a bit of practice now that gravity has changed.

now that: because of the fact that

Now that I’m free, I can enjoy music for a while.

Now that you’ve grown up you can decide it yourself.

Passage Analyzing

Chart of the text

How life began on the earth

Text Retelling

Retell the text using about 100 words.

Step Ⅵ Homework

Retell the passage according to the form.

Remember important language points.

The second period Extensive reading

Step 1

Show some pictures of the astronauts in the space

Step 2

Read the passage and fill in the form

Step 3 Language points

1. Last month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer.

Enough: pron adj adv

The boy is old enough to do to school.

He couldn’t run quickly enough to catch up with the cat.

2. Then we were off.

be off = set off

I am off today.

We are off today.

3 get close to

靠近,接近,指动态变化

be close to

距......近,指状态

The school is close to the post office

4. But when I tried to step forward I found I was carried twice as far as on the earth and fell over.

1). “A + be + 倍数 + as +形容词原级 + as +

B”.

This tree is three times as tall as that one.

His father is twice as old as he.

2). “A + be + 倍数 +形容词比较级 + than +

B ”

The Yangtze River is almost twice longer than the Pearl River.

The number of students in our school is three times larger than that in theirs.

3). “A + be + 倍数 + the +名词 (size, length, amount) + of + B”

The newly broadened square is four times the size of the previous one.

6. We watched, amazed as fire broke out on the outside of the spaceship as the earth’s gravity increased.

break out

1) 战争爆发

2) 发生争吵

3) (火灾)发生

7. cheer up; cheer sb. up

感到高兴振奋

8. masses of 许多,大量

9. get the hang of 熟悉,掌握,理解

10. exhausting (sth); exhausted (sb)

Step 4 Homework

Collect passages about gravity.

Prepare for speaking.

The third period Language Study

Step 1 Revision

Translate the following sentences

1. 你迟早会成功的。

You’ll succeed in time.

2. 我的车与你的不一样。

My car is different from yours.

3. 站在门旁边的那个人是谁?

Who is the person standing by the door?

4. 他总是第一个来,最后一个离开。

He’s always the first to come and the last to leave.

5. 既然你已经长大了,你自己决定吧。

Now that you have grown up you can decide it yourself.

Step 2

Check the exercises in this part .

Step 3 Grammar

What part does the underlined part serve as in each sentence?

A tree has fallen across the road.

You are a student.

To find your way can be a problem.

Smoking is bad for you.

“How do you do?” is a greeting.

What she said is not yet known.

That we shall be late is certain.

It is certain that we shall be late.

We can see from these sentences that a sentence serves as subject, so we call it Subject Clause

1. Noun Clauses as the Subject

To tell what it is and the importance with some examples

What the teacher said today was quite right.

That they are badly in need of help is quite clear.

Whether they will sell the house is not yet decided.

Whatever was said here must be kept secret.

2 it 作形式主语

It is a pity that she has made such a mistake.

1) It is + adj. / n. +从句

It is a pity/shame that... 遗憾的是……

It is possible that... 很可能……

It is unlikely that... 不可能……

2) It +不及物动词+从句

It seems/appears that... 似乎……

It happened that... 碰巧……

3) It + be +过去分词+从句

It is said that... 据说……

It is known to all that...

众所周知……

It is reported that... 据报道……

It is believed that...

据信……;人们相信……

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