八年级下期中(Unit 1-5)考试要点串讲 学情研究与对策
要点归纳（6点）
要点归纳1
某人拥有VS某地存在（有）某物：
People will have robots in the near future.
People是主语，位于动词之前
There will be robots working in factories.
Robots是主语，位于动词之后
若写成
Robots will be working in factories.在意义不表示“将会有”的意思。
翻译下列句子：
There will be more birds singing in the trees in ten years.
There will be less pollution in the river after fewer factories.
There will be more free time.

区别下列句子：
A -----I will be an engineer in ten years. Be here means become
B-----There will be an engineer in my family in ten years. Be here means exist
C----These（robots）will be in every home. Be here means “come true”
某地存在（有）某物句型的疑问、否定、肯定回答和否定回答。
There will be more birds singing in the trees in ten years.
改写为疑问句
______ ______ be more birds singing in the trees in ten years?
作肯定回答 Yes,______ _______.
否定回答 No,_____ ______.
There will be less pollution in the river after fewer factories.
改为疑问句
_____ ______ be less pollution in the river after fewer factories?
There will be more free time.
改为否定句 There ______ be more free time

要点归纳2
情态动词
can, may, might, could,would and should等。
Might ,could ,would, should 四个情态动词既是may,can,will,shall的过去时，又不表示过去时，而是情态动词，要同实意动词连用，常用的还有must ,needn’t,can’t. might 表示 小于50%的可能性，could 表示一种客气的请求， would 表示有礼貌的邀请，should 表示应当，该。
典型考题区别：
He can speak several languages.
He is able to swim across the river,thogh it is flooded.

-------Could you tell me where Center Street _______(is was)?
-------Sorry, I ________(couldn’t can’t).
I would like you to come to my house.
(Should Would) you mind my invitation? 邀请的，委婉的说法
常用的还有
Why not ______( come to come) to my house?
Should 常用于提出建议
You _________(should would) say you’re sorry.
Maybe you ______(could should) give him a ticket to a ball game. could 用于劝说更委婉（潜在的意思是“这不就和解了。”） （refer to page11 课文句子改写）
You　______(should would）be ashamed of yourself. 语气坚决，应该
You ________(wouldn’t shouldn’t) tell lies.含有责备，不应当
It ___(should might) be easy.表示期待某事发生或对某事进行推断Might only means not sure

要点归纳3
当心句末的时间词,用时髦的话说是标志词
前面有Look, -------. Listen,---------. 我们知道后面的句子要用“现在正在进行时”
Look,mom is driving her new car.
Listen, something strange is happening outside.
当心后面的时间词 at that time,at 8 o’clock yesterday when引导过去时间的动作，（有时也可以引导过去进行时。）
while可以引导过去正在进行时，如：
page19 2b改写句子
1 The boy was walking down the street when suddenly a UFO landed.
When 引导的动作突然插入到前面正在进行的动作之中，
3 While the alien was buying a souvenir,the girl called the police.
外星人正在买纪念品，乘此时间，另一个动作发生了。
P20 4
A: What were you doing at nine o’clock last Sunday morning?
B: I was sleeping at that time.
4. The girl was shopping when the alien got out.
While the girl was shopping, the alien got out.
when 与while区分：
（1）"当...的时候"，如后面连接的动词为进行时态，则用while多于用when。而when通常与瞬间性动词或延续性不强的动词连用。
（2）如果while前后的动词都是进行时态，while可译为"与此同时"
I was reading while my brother was drawing. （含有对比而非转折）
（3）当while前后的句子描述的情况相对或相反，while可译为"而"，while更强调并列的对比而非转折。
e.g. I am out-going while my sister is quiet and shy.
总之，when表示做某种动作的时间或瞬间，由其引导的时间状语的时态如果是一般过去时，其主句通常要用过去进行时。while表示略长的一段时间，由其引导的时间状语从句用过去进行时，而主句时态根据实际情况而定。
过去进行时的用法
过去进行时由“was/were+现在分词”构成。表示过去某一时刻或某段时间正在进行的动作。其用法有：
1.表示过去某一时刻正在进行的动作。如：
I was doing my homework at eight o’clock last night. 昨晚八点我正在做作业。
2.表示过去某段时间正在进行的动作。如：
They were building a house last winter. 去年冬天他们在建一座房子。
3.表示过去频繁发生的习惯性动作。常与always等词连用。如：
Little Tom was always asking many questions. 小汤姆总是会问许多的问题。
4.动词come, go, leave, start, arrive等表示位置转移的动词用过去进行时表示过去将要发生的动作。如：They wanted to know when we were leaving for Shanghai. 他们想知道我们什么时候去上海。
过去进行时和一般过去时的用法比较：
一般过去时强调过去某个时
生词表: