一．重点单词补充
1. 液体 _______________
2. 氧气 _______________
3. 电 __________
4. 与电有关的 用电的 ________________
5. 形成 ______________
6. 火焰 ______________
7. 演讲 ______________
8. （大学的）科，系 _______________
二．重点短语补充
1. 与……不同 ________________
2. 和……一样 ________________
3. 导致 ______________
4. 由……引起 ____________
5. 在……底部 ____________
6. 由衷，发自内心 _____________
7. 不让……入内 _____________
8. 越…… 越…… ______________
9. 最新设备 _____________
10. 以……骄傲 _____________
11. 把……按顺序排列 _____________
12. 确保 ____________
13. 至少 ____________
14. 向……学习 _____________
三．重点句型
1. Water exists as a solid, a liquid and a gas.
2. Two-thirds of the earth’s surface is water.
3. 50% of the earth’s surface is water.
4. The earth is twice as large as the moon.
5. The earth is forty-nine times larger than the moon.
6. The pronunciation of large numbers in English is different from that in Chinese.
7. If object A weighs 100 kilogrammes, and object B is four times heavier, how heavy is object B?
8. It’ll be a lot heavier than magnesium.
9. The more books I read, the more information I learn.
10. Here is a table with the metals that react most at the top.
11. Our chemistry teacher, Mr. Longford, takes us to public science lectures about four times a term, and these are always very interesting, as the lecturers are people who have made real discoveries in their area of science.
我们的化学老师朗福德先生大约每学期带我们去听四次大众科学讲座,讲座总是非常有趣,因为作讲座的人都是在各自的科研领域里有真正发现的人。
本句是由and连接的并列句,后一个分句中含有由as引导的原因状语从句。原因状语从句中又含有who引导的限制性定语从句,people为定语从句的先行词。
(1) as conj.
①“因为”，引导原因状语从句,表示“双方已知的原因”,语气比since弱,较为正式。
As it is raining, you’d better take a taxi.
既然在下雨,你最好乘出租车。
I went to bed early, as I was exhausted.
我睡得早,因为我筋疲力尽了。
②“当……的时候”,引导时间状语从句,表示“一边……,一边……”、“随着……”。
“No, I won’t. I’ll be fine,” said Zhou Kai, as he opened the door.
“不,我不会感冒的。我会很好的。”周凯一边开门一边说。
As time went on / by, she became more and more worried.
随着时间的流逝,她变得越来越焦虑。
③引导让步状语从句，此时句子用倒装语序。
Rich as he is, he never spends a cent on clothes.
虽然他很富有,但他从不花一分钱在衣服上。
Child as he is, he knows a lot.
尽管他是个孩子,但懂很多事情。
④引导方式状语从句,意为“如,像；按照……的方式”。
I want you to tell my friend your very interesting experience exactly as you have told it to me.
我想让你像给我讲述的那样,给我的朋友讲一讲你那段极其有趣的经历。
Remember, you must do everything as I do.
记住,你必须按照我做的那样做。
⑤引导比较状语从句,用于“as…as…或not so / as…as…”中,前一个as是副词,后一个as是连词,意为“如/不如……一样”。
I don’t speak English so / as well as he does.
我英语讲得不如他好。
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