第二单元物质的变化。
5、垃圾的**利用有哪些好处?
4、如何借助大熊座找到北极星?(p58)
答:我们在水中可发现变形虫、鼓藻、草履虫、船形硅藻等。
8、晶体的形状多种多样,但都很有规则。有的是立方体,有的像金字塔,有的像一簇簇的针……有的晶体较大,肉眼可见,有的较小,要在放大镜或显微镜下才能看见。
18、大多数生物都是由多细胞组成的,但也有一些生物,它们只有一个细胞,称为单细胞生物。如草履虫、变形虫、细菌等。
7、将铁钉的一部分浸入硫酸铜溶液中,有什么现象?过一会儿,取出铁钉,我们又观察到了什么现象?(p36)
答:放大镜的中间厚,边缘薄,光线在透过放大镜时会产生折射,因此会把物图像放大。
答:火柴燃烧、铁钉生锈、白糖加热等。
16、空气是我们生命中生时每刻都需要的地球资源,大气污染影响着我们的健康,如大气中的飘尘易使呼吸系统发生病变。减少废气和废物排放是控制大气污染最根本的办法。
lesson 1 a private conversation 私人谈话。
first listen and then answer the question. 听录音,然后回答以下问题。
why did the writer complain to the people behind him?
last week i went to the theatre. i had a very good seat. the play
was very interesting. i did not enjoy it. a young man and a young
woman were sitting behind me. they were talking loudly. i got very
angry. i could not hear the actors. i turned round. i looked at the
man and the woman angrily. they did not pay any attention. in the
end, i could not bear it. i turned round again. 'i can't hear a word!'
i said angrily.
it's none of your business,' the young man said rudely. ‘this is a
private conversation!'
new words and expressions 生词和短语。
private adj. 私人的。
conversation n. 谈话。
theatre n. 剧场,戏院。
seat n. 座位。
play n. 戏。
loudly adv. 大声地。
angry adj. 生气的。
angrily adv. 生气地。
attention n. 注意。
actor. n男演员。
turn. vi 转身。
bear(bore, borne) v. 容忍。
business n. 事。
rudely adv. 无礼地,粗鲁地。
课文详注 further notes on the text
1.last week i went to the theatre.上星期我去看戏。
1)句首的“last week”点明叙述的事情发生的时间是上星期。因此整篇课文的时态基本上应是过去时。
包括过去进行时),直接引语部分的时态除外。
2)动词go的原义是离开一个地方去另一个地方,与介词to连用后,常加上主语所要去的目的地来代。
表主语的动作目的。课文中go to the theatre = go to the theatre to see a play,即去剧场看戏。类似的还有。
go to the cinema = go to the cinema to see a film(去电影院看电影)。这种表达方式简明扼要。请注意在。
以下的短语中名词前通常不加冠词:
go to school上学。
go to bed**,睡觉。
go to church上教堂,去做礼拜。
go to hospital(医院) 去看病;
go home(跟home相连一定表示没有事情可做回家休息)
i am at home. 在家休息。
go to the +地点表示去某地干嘛
go to the theatre = go to the theatre to see a play去剧场看戏 (theater美式)
go to the cinema =see a film 去电影院看电影。
go to the dairy 去牛奶店。
go to the + 人 + s 表示去这个人开的店。
go to the doctor's 去看病;
go to the butcher's 买肉。
2.had a very good seat,座位很好。
seat一般指戏院、汽车等配置的固定座位,也可以抽象地表示“座位”或“位子”的概念:
the front seat of a car汽车的前座。
take a seat, please.请坐。
seat n. 座位。
这个座位有人么?is anyone here? /is this seat taken, please?
vt. 使就坐。
结构:seat oneself 常用be seated形式。
we were seated at the table.
all of us were seated around the table and aunt pat served spaghetti for supper.
3.the play was very interesting. 戏很有意思。
interesting属于现在分词形式的形容词,意思是“使人感兴趣”。
它通常与非人称主语连用或修饰某个事物:
this is an interesting book/idea. 这是一本有趣的书/一个令人感兴趣的主意。
the play was very interesting. 戏很有意思,was(be 系动词) “是”
句子结构:主语+系动词(was)+表语。
interesting a. 有趣的。
interested a. 感兴趣的 be interested in
i was very interested in the play.
interest n.
take an interest in
i took a great interest in the play.
4. i did not enjoy it. 但我却无法欣赏。
enjoy vt. 欣赏,享受,喜爱后面的宾语为名词、代词、动名词。
enjoy +n. 喜欢,从当中得到一种享受(后面不能跟人)
i enjoy the music.
enjoy the dinner/film/program/game
enjoy oneself/代词玩的开心。
enjoy +代词,一般为反身代词。
enjoy oneself =h**e a good time 玩的很开心,过的很愉快。
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