1人教版高中英语必修3 Unit 4 Astronomy using language ：A visit to the moon课件（共16张）

(共13张PPT)
A visit to the moon
Pay a visit to the moon
How?
What?
1 There is no gravity in space.

2 On the moon there is no gravity.

3 In the spaceship, we can float weightlessly around.

4 We can walk as freely on the moon as on the earth.
Tests on Gravity
T
F
T
F
Walking does need a bit of practice now that
gravity has changed.
On their trip to the moon, how many times did the force of the gravity change?
It became very______.
The gravity became very________.
The gravity_________.
strong
disappeared
light
When I tried to step forward, I found I was carried twice as far as on the earth and I fell over.
I cheered up immediately and floated weightlessly around…
The way gravity changed
Left the earth
In space
On the moon
1.I cheered up immediately and floated
weightlessly around in our spaceship
cabin watching the earth become smaller and the moon larger.
cheer up : 欢呼，喝彩，使高兴。
当看到球队的到来，人群欢呼起来。
_____________________ when they saw the team arrive.
为了让她高兴，他带她去听音乐会。
He took her ____________ to ___________.
The crowd cheered up
to the concert
cheer her up
倍数的表达方法
Ａ　is +倍数＋as＋形容词原级＋as　Ｂ
Ａ　is +倍数＋形容词的比较级＋than Ｂ
Ａ is +倍数＋the＋n. (size, weight, height, length…) of Ｂ
The park is three times as big as that one.
The park is three times bigger than that one.
The park is three times the size of that one.

1).Leaving the moon’s gravity was not as painful as leaving the earth’s.


2).We shall fell its gravity pulling us but it will not be as strong a pull as the earth’s.






(not) as/so +形容词原级+as
as +adj. +a/an +单数可数名词+as
It is generally believed that teaching is_____ it is a science.
an art much as B. much an art as
C. as an art much as D. as much an art as
D
now that＝since :既然，由于
既然每个人都到了，我们就可以开始会议。
_________________________, we can
begin the meeting.
由于你是一个大男孩,你就必须行为表现得更好.
_______________________, you must
behave better.
Now that everybody is here
Now that you are a big boy
2. I cried, “walking does need a bit of practice now that gravity has changed.”
get the hang of sth
掌握某事的窍门
我一直想掌握英语学习的窍门。
I’ve been trying to ______________________________.
无论做什么，他都能很快找到窍门。
Whatever he does, he can always________________.
get the hang of learning English
get the hang of it
3.After a while I got the hang of it and we began to enjoy ourselves.
4.We watched, amazed as fire broke out
on the outside of the spaceship as the earth’s gravity increased.
amazed 是过去分词，此处做状语用
他进来的时候没有人注意到.
He came in _________ .
break out (战争,争吵,疾病等)爆发
在深夜,突然有人吵架.
__________________ suddenly at midnight.
A quarrel broke out
unnoticed
与break相关的短语:

break away from
脱离; 打破陈规
break down
打破; 毁掉; (身体)坏掉
break in
破门而入; 打断
break through
突围; 突破; 冲垮; 克服
break up
打碎; 拆散; 分裂; 分解
break one's word/promise
食言; 说话不算数
Last month I paid a v____ to the moon with my friend. Before we left, I was told the force of g_____ would change three times on our journey. Then we took off. As we left the earth, I became very heavy. Gradually the weight l_______. When I was in space, it d__________. We f_______ weightlessly in the cabin and I c_____ ___. When I was on the moon, I was surprised to find out even walking needs lots of practice n__ ____ gravity changed. The returning of the earth was very f_________. We were amazed to watch fire b____ ____ on the outside of the ship.
gravity
visit
lessened
disappeared
floated
cheered up
now that
frightening
break out