下面是本学期出现的重点词汇和短语，你都掌握了吗？一起来巩固一下吧。
chapter1
1. liquid(液体。
2. solid(固体。
3. gas(气体。
4. cover(覆盖。
5. stream (小溪。
6. tap(龙头。
7. pour(倾泻8. freeze(惊呆 9.
waste(浪费10. sound(听起来 11. angry(生气的12.
obey(服从 13. nod(点头14. treatment(处理 15.
tr**el(旅行16. until (直到……时 17. plant(工厂18.
pollute(污染。
19. valuable(有价值的。
20. customer(顾客。
21. ordinary(普通的22. owner(主人 23. bath(沐浴24. total(总数。
25. pump(用泵输送。
26. step-by-step(循序渐进的。
重点词组。1. pour into(涌入。
2. drop ..into(把……抛入。
3. look around(环顾四周。
4. turn off(关闭。
5. clean up(打扫干净。
6. in the first place(首先。
7. shake one’s head(摇头。
8. carry ..to (把……带到……
9. flow chart(流程图。
重点句子。下面是本章出现的重点句子，你都掌握了吗？
1. she was brushing her teeth and the tap was on.
2. water was pouring into the sink.
3. “turn that tap off,” a voice said loudly. daisy froze.
4. it’s not easy for me to get here.
5. i came from the sea in the first place.
6. she looked around, but saw no one.
7. remember not to waste or pollute me.
8. i’m valuable, like liquid gold.
9. benny shook his head. 10. then people cleaned me up.
11. there is a lot of / much / a little / some / no water in the pool.
12. there are a lot of / many / a few / some / no swimmers in the pool.
13. i h**e too much / too little / not enough milk.
14. i h**e too many / too few / not enough eggs.
15. how many oranges are there in the fridge?
16. how much food is there in the fridge?
chapter2
重点词汇。1. local(当地的。
2. term(学期。
3. publish(出版。
4. hold(举行。
5. suggest (建议；提议。
6. experience(经验；经历。
7. secretary (秘书 8. free (免费的。
9. consider (考虑 10. briefly (简要地 11.
conclude(结束12. march(行进 13. form(排列成14.
praise(表扬。
15. deserve(应受。
16. shame(遗憾的事。
17. absent(不在场的；缺勤的。
18. match (比赛；竞赛。
重点词组。1. hold a meeting (召开会议。
2. elect ..as (选举……为。
3. vote for(投票选举。
4. take charge of (管理，负责。
5. take notes (做记录。
6. ask for(要求，请求。
7. be responsible for ..对……负责。
8. pay for (付款。
9. make a list (做一份清单。
10. be free to (对……免费。
11. think about (考虑。
12. agree to(同意……
13. ought to (应该。
14. make a decision about(关于……做。
出决定。15. conclude the meeting(结束会议。
16. in one week’s time (在一周以后。
17. talk over (商量。
18. be pleased with(对……满意。
重点句子。下面是本章出现的重点句子，你都掌握了吗？
1. we held a meeting after school.
2. tony suggested joyce. he said, “we should choose joyce because she has experience...
3. we elected joyce to be the chief editor.
4. then joyce took charge of the meeting.
5. we ought to elect a secretary next.
6. she asked for suggestions.
7. then the others voted for me.
8. i started taking notes.
9. talk it over among yourselves. we will decide at the next meeting.
10. then we made a list of some other things to discuss.
chapter3
1. innocent(无辜的。
2. detective(侦探。
3. guilty(犯罪的。
4. recent(最近的。
5. case(案件。
6. alone(独自。
7. lock(锁；锁上。
8. carpet(地毯。
9. question(提问 10. necklace(项链。
11. recognize(辨认出。
12. suspect(嫌疑犯。
13. admit(承认 14. own(自己的 15. insurance(保险 16. diamond(钻石。
17. piece(一件。
18. separately(单独地。
19. crime(犯罪行为 20. belt(皮带。
重点词组。1. interview sb.(采访某人。
2. steal sth. from sb.(偷某人东西。
3. go to jail(去坐牢。
4. admit doing sth.(承认做某事。
5. instead of(代替。
6. at last(最后。
7. deny doing sth.(否认做某事。
8. belong to(属于。
9. at once(立刻；马上。
10. make sure(确保。
11. bump into ..撞到……上。
12. work as (从事。
13. as well as (也。
14. report the theft (报案。
15. notice sb. doing sth. (注意到某人在做某事。
16. no longer (不再。
17. look for clues (寻找线索。
18. at the front (在前面。
19. break into (破门而入。
20. arrange to do sth. (安排做某事。
重点句子。下面是本章出现的重点句子，你都掌握了吗？
1. pansy wanted to write an article on detectives for the school news*****.
2. why do you like working as a detective?
3. i hope to protect the innocent as well as find the guilty.
4. well, let me tell you about a recent case.
5. he lives alone and enjoys collecting things.
6. he bought a vase for two hundred thou-
sand dollars and showed it to only two people.
7. li reported the theft, and i went to his house to look for clues.
8. they both denied stealing the vase, but i noticed jill wearing a black pearl necklace.
9. it has the same design as the earring.
10. she recognized it at once and said, “it’s mine.”
11. but someone stole it from my house
a week ago.
12. i see, so jill was no longer a suspect.
13. they only mean one thing — no thief broke into li’s house.
14. so i questioned li and, in the end, he admitted stealing his own vase.
15. i bought insurance for the vase.
16. he wanted to make jill go to jail instead of himself.
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