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(共26张PPT)
Unit 7 Space exploration
重要词汇短语及语法复习
开始练习 Start
词汇通关
英文单词 (Word)
国际音标 (IPA)
中文释义 (Meaning)
beef
/bi f/
n. 牛肉
seafood
/'si fu d/
n. 海鲜
afford
/ 'f d/
v. 承担得起（后果）
mistake
/m 'ste k/
n. 错误；失误
stick
/st k/
v. 粘；贴
词汇通关
英文单词 (Word)
国际音标 (IPA)
中文释义 (Meaning)
hit
/h t/
v. 碰撞；撞击
muscle
/'m sl/
n. 肌肉
gym
/d m/
n. 健身房
satellite
/'s t la t/
n. 人造卫星
destroy
/d 'str /
v. 摧毁
词汇通关
英文单词 (Word)
国际音标 (IPA)
中文释义 (Meaning)
average
/' v r d /
adj. 平均的
probable
/'pr b bl/
adj. 很可能发生（或存在等）
select
/s 'lekt/
v. 挑选；选拔
spaceflight
/'spe sfla t/
n. 航天；宇宙飞行
serve
/s v/
v. 为…… 工作；服务
词汇通关
英文单词 (Word)
国际音标 (IPA)
中文释义 (Meaning)
deliver
/d 'l v (r)/
v. 传送；运载
fuel
/'fju l/
n. 燃料
supply
/s 'pla /
n. 供应量；供给量
point
lab
/p nt/
/l b/
n. 时刻；阶段
n. 实验室
短语通关
英文单词 (Word)
国际音标 (IPA)
中文释义 (Meaning)
take off
起飞
for a while
一段时间
turn out
证明是；结果是
cannot afford to
承担不起（后果）
by mistake
错误地；无意中
短语通关
英文单词 (Word)
国际音标 (IPA)
中文释义 (Meaning)
daily routine
日常生活；日常工作
space junk
太空垃圾
naked eye
肉眼
重点语法归纳
一、过去进行时
1. 基本含义：
表示过去某个特定时间点 / 时间段内，正在发生或持续进行的动作，强调动作 “正在进行” 的状态。
重点语法归纳
2. 句型结构（后接动词原形，无人称、时态变化）
肯定句：主语 + was/were + doing (动词 - ing)
I was working in the lab at that time. 那时我正在实验室工作。
否定句：主语 + was/were + not + doing
They were not travelling in space then. 那时他们没有在太空航行。
一般疑问句：Was/Were + 主语 + doing？
Was he sending signals at 8 yesterday evening
昨晚 8 点他正在发送信号吗？
重点语法归纳
3. 标志语
过去特定时刻正在做
标志词：at 8 yesterday, this time yesterday, then, at that moment
例：We were taking off at 9 a.m. last Sunday.
上周日上午 9 点我们正在起飞。
重点语法归纳
3. 标志语
过去一段时间内持续做
标志词：from…to…, during the night
例：The satellite was working during the whole night. 卫星整晚都在运行。
while 引导，两个过去动作同时进行
例：While he was doing experiments, I was collecting data. 他做实验时，我在收集数据。
重点语法归纳
二、情态动词表推测（may/might/must/can’t）
may /might（可能，可能性弱）
例：Humans may live on Mars one day. 人类某天可能在火星居住。
must（一定，肯定推测，只用于肯定句）
例：The satellite must be working well. 这颗卫星一定运行良好。
can’t（不可能，否定推测）
重点语法归纳
二、情态动词表推测（may/might/must/can’t）
can’t（不可能，否定推测）
There can’t be life without water in space. 太空中没有水就不可能有生命。
should（应该，表合理推测 / 建议）
We should study hard to explore space. 我们应该努力学习探索太空。
重点语法归纳
2. 句型结构（后接动词原形）
肯定句：主语 + had better (’d better) + 动词原形
例：You’d better start early. 你最好早点开始。
否定句：主语 + had better not + 动词原形（重点：不能缩写为 hadn’t better）
例：You’d better not argue with others. 你最好不要和别人争吵。
重点语法归纳
三、原因状语从句 & because of
1. because /since/as 用法辨析（语气：because＞since＞as）
because：直接原因，语气最强，回答 why，从句常放句末
例：Astronauts exercise because there is no gravity in space.
宇航员锻炼因为太空没有重力。
重点语法归纳
三、原因状语从句 & because of
易错：because 和 so 不能连用
since：既然、已知原因，多放句首
例：Since space junk is increasing, we must solve the problem. 既然太空垃圾在增多，我们必须解决这个问题。
as：由于、显而易见的原因，语气最弱
例：As the rocket is ready, we can take off soon. 由于火箭准备好了，我们很快可以起飞。
重点语法归纳
三、原因状语从句 & because of
2. because of（介词短语）
后接名词 / 代词 / 动名词，不能接句子
例：He failed because of space junk. 他因为太空垃圾失败了。
练一练
一、单项选择
1．She is the best choice for this job, ________ she has a lot of experience.
A．however B．since C．while D．so
2．When I ________ home yesterday, my mother ________ dinner in the kitchen.
A．was getting; cooked B．got; was cooking
C．get; cooks D．have got; is cooking
B
B
练一练
一、单项选择
3．—The date May 12th is unforgettable to most people in Sichuan.
—That’s true. My parents can still remember what they ________ when that earthquake happened.
A．are doing B．did C．were doing D．have done
4．I was folding my clothes while my mother ________ in the kitchen.
A．cooked B．cooks C．cooking D．was cooking
D
C
练一练
一、单项选择
5．People should not ________ the forests.
A．destroy B．destroys C．destroying D．to destroy
6．The computer is a little expensive. I can’t ________ it at that price.
A．allow B．remind C．afford D．get
C
7．Many people thought the show would be boring, but it ________ to be very wonderful.
A．turned off B．turned outC．turned into D．turned around
A
B
练一练
一、单项选择
8．I go to the school ________ to play basketball every Friday afternoon.
A．lab B．gym C．satellite D．spaceflight
B
练一练
二、单词拼写
9．The heavy rain will ________ (摧毁) the small houses in the village.
10．The scientists sent a ________ (人造卫星) into space successfully.
statement
11．We should do exercise to make our ________ (肌肉) strong.
destory
muscles
练一练
二、单词拼写
12．It ________ (很可能) will rain tomorrow.
13．The ________ (平均的) age of the students in our class is 14.
probably
average
练一练
三、完成句子
14． 观众的目光无法从皮影上移开。
The audience can’t ________ ________ ________ ________ the shadow puppets.
15.我正躺在爷爷家花园的草地上，寻找夜空中的星星。
I _______ ________ on the grass in my grandfather’s garden and looking for the stars in the night sky.
was/am lying
16.父母总是鼓励我不要轻易放弃。
My parents always encourage me ________ ________ ________ ________ easily.
take their eyes off
not to give up
练一练
三、完成句子
17．薯片是无意中被发明的。
Potato chips were invented _______ ________.
18．科学家们进行这项实验是为了验证假设。
Scientists ________ ________ the experiment to test the hypothesis.
carried out
by accident
Well Done!

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