《Unit7 Will people have robots》知识点总结免费下载23
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22. over and over again 一遍又一遍,反复

23. get/be bored (of...) 厌倦(...)

24. look for 寻找,强调过程 find 强调结果。

25. in the future 将来

* 1. more, less, fewer的用法区别:

more为many, much的比较级,意为"更多",可修饰可数与不可数名词。

less是little的比较级,修饰不可数名词。 fewer是few的比较级,修饰可数名词复数

e.g. more (many) trees / (much) pollution fewer (few) trees / less (little) pollution

【注意】few, little表示否定"几乎没有"。 a few, a little表示肯定"一点,几个"。

Because he has few friends, he often stays at home.

* 2. alone adj.(只作表语)adv. 独自;单独

He was alone in the hous. 他一个人在屋里。 I went to the movies alone,I felt lonely. 我独自去看电影了,我觉得很孤独。

【注】alone 表示"单独的,独自一人的",不含感情色彩。做形容词时,只能在be动词或系动词之后做表语,与lonely不同; lonely表示"孤独的,寂寞的"含有丰富的感情色彩。lonely做形容词时,可做定语和表语。如: a lonely village 孤寂的村庄。

* 3. keep: v. 保持;维持;喂养

1). keep + sb. / sth. +形容词 使某人/某物... The job kept them busy for a year. 这项工作让他们忙碌了一年。

2). keep +形容词 保持... The man ran up and down to keep warm. 这个人来来回回地跑着取暖。

3). keep + sb. / sth. doing 让某人/某物继续做某事 She kept us waiting for her for an hour. 她让我们等了一个小时。

4). keep + doing 继续做,坚持做 He kept running after her, trying to catch her. 他不停地在追赶她,试图抓到她。

* 4. in 与 after的区别

in是指以现在时间为起点的"在一段时间以后",也可以表示"在将来多少时间之内",句子中的谓语动词要用一般将来时态; after常指以过去时间为起点的"一段时间之后",所以它与过去时态连用。

after和in都可以表示"以后"的意思,其区别是:

1)after以过去为起点,表示过去一段时间以后,常用于过去时态的句子。例如:They started working after lunch.

2)in以现在为起点,表示将来一段时间以后,常用于将来时态的句子。如: They will start working in half an hour.

3)在某个特定的时间后,after也可用将来时态。例如:They will start working after 10 am. 他们将在上午10点以后开始工作。

4) "after+一段时间"或"一段时间+later"表示"(在过去某个时间看来)一段时间之后"。

He went home after two days. Three years later,she had a baby.

* 5. Seem的用法:

1)seem to do似乎He seems to think so. 2)It seems that看来It seems that he is lying. 3) seem +adj./n.好象是 He seems ill.

* 6. hundred 的用法

表示确数:one hundred students three hundred books five hundred trees 概数:hundreds of students/books /trees

* 7. Such作形容词,意思是"如此的""这样的",修饰各种名词。

Such这样的。如It is such bad weather.天气如此恶劣。

Such常和as搭配,表示一种类别。如We enjoy such a voice as hers.我们喜欢象她那样的嗓子。

Such常和表示结果的that从句搭配,表示"如此....以至于..."如 It was such a hot day that we all had to stay at home.

* 8. 几个相似的"It句型"

1) It's +adj.+ that从句:在该句型中,it代替that从句,形容词用来说明that从句内容的性质。如,It‟s polite that you always give seats to the elderly on the bus.

2) It‟s +adj.+to do sth.在该句型中,it代替to do sth的内容,形容词用来说明to do sth的性质。如,It‟s useful to remember lots of words before the exams.

3) It‟s +adj.+for sb. to do sth.在该句型中,it代替to do sth的内容,形容词用来强调to do sth就sb而言的性质(常见的形容词有possible, important, necessary, difficult) It is bad for you to read under the sun.

4) It‟s +adj.+of sb. to do sth.在该句型中,it代替to do sth.的内容,形容词用来强调of后所接宾语本身的性质(常见的形容词有kind, rude, clever, foolish, polite) It is polite of you to give seat to the old.

* there be与have的区别:

1)含义不同。there be表示的是"某地(时)有某人(物)",强调"存在关系"。have则表示"某人(物)所有",强调"所属关系"。如: There is a bus in your factory.(公共汽车不一定属于我们厂所有)Our factory has a bus.(公共汽车属于我们厂所有)

2)句型不同。there be句型为"There be +某人(物)+某时(地)";have 句型为"某人(物)+have(has)+某物(人)。如, There isn‟t a cat under the chair. She doesn‟t have two brothers.

3) 当表示某物的构成和组成部分时,用there be和have 均可。如,Our school has sixty classes.= There are sixty classes in our school. 我们学校有60个班。