Unit 5 Water 第五单元 水
知识复习、详解与练习
重点单词
drop journey quantity experiment fresh salt on voice reservoir add chemical through pope valuable bit bank change return vapour form stir continue crystal
重点短语
turn off 关掉
turn on 打开
add…to… 将…加入…
a bit 一点
pocket money 零花钱
be made up of 有某物组成
重点句型
It’s time for sb. to do sth. 某人该做某事了
remember not to do sth. 记得不要做某事
How much … is there…? 还有多少….（不可数）？
How many …. are there…? 还有多少….（可数）？
要点详解
1. 几分之几
quarter 1/4
half 1/2
two thirds 2/3
three fifths 3/5
分子用基数，分母用序数，
当分子为大于1的整数时，分母要变复数。
请用英文写出下列分数
1/3 1/4 1/10
4/7 3/10 7/20
2. 该做某事了。
It’s time for sb. to do sth.
It’s high time for sb. to do sth.
e.g Then it was time for people to clean me.
李先生该去岗顶买个金士顿8G优盘了。
3. 把A加入B
add A to/into B
e.g They cleaned me and added some chemicals to me.
Mr. Li added some salt into the soup.
李先生向优盘/水中加了一些化学物质。
4. （复习）through across over辨析
through 穿越某一空间
e.g He went through the corridor.
across 穿过某一平面
e.g He walked across the street.
over 越过某一障碍物
e.g He ran over the buses, and went into Bainaohui.
5. 使某物变……
make sth. + adj. (clean / dry)
e.g People will make me clean again.
Mr. Li made the security guard very angry.
6. 记住不要做某事
remember not to do sth.
remember to do sth. 记得做某事
e.g Remember not to buy fake Kingston flash drives, Mr. Li.
Remember to go to Gangding to buy the flash drive.
7. 使某物保持某种状态
leave sth. adj.
e.g. I left the tap on in the bathroom.
Please leave the door open.
Mr. Li left his computer on for the whole night.
8. interesting / interested
v+ing 令人xx的（东西）
v+ed xx的（人）
e.g. The film is very interesting. Mr. Li is very interested.
拓展：对某物感兴趣的
be interested in sth.
e.g. Mr. Li is very interested in films.
重点语法
用little / few, a little / a few, many / much等谈论数量
1. little系列：little / a little用于不可数名词前
few系列：few / a few 用于可数名词前
e.g.
There is a little water in the bottle.
There are a few bottles in the box.
2. 带a系列：a little / a few 意为“一些“，虽然不多但仍然有一些
不带a系列：little, few意为“几乎没有”，表示否定，
There are few people in the room.
There is little water left in the bottle.
3. quite a few 意为 “很多”
Mr. Li has quite a few Kingston flash drives.
4. many, much 不解释，再次提醒many修饰可数名词， much修饰不可数名词
课后练习
一 单项选择
1. Will you go for a walk after _________ dinner ?
a. a b. an c. the d. /
2. —Carl, why not go and help your sister water the flowers there ?
—Why ________ ? I’m busy myself. Jack is lying on the grass doing something.
a. me b. I c. him d. he
3. My cousin is always busy with his work, He has ________ time to read newspaper .
a. little b. few c. a little d. a few
4. There is ________ sugar in my coffee. It’s too sweet .
a. too much b. too many c. too few d. too little
5. Alice looked ______the room, but saw no one .
time in a bottle a. around b. for c. at d. up
6. Ben:What did Peter drop _________ the river ? Alice:Maybe a stone.
a. in b. into c. on d. onto
7. It’s time ________ all of us to get ready for the quiz.
a. to b. of c. for d. at
8. There ___________ twenty attendants at the contest tomorrow .
a. are b. have c. will have d. will be
9. We should __________ the used water clean before it goes back into the sea .
a. keep b. make c. become d. turn
10. After I had a bath in the bathroom this morning, I _______ the tap on, This makes the bathroom full of water.
a. left b. forgot c. turned d. switched
11. We all should remember ________ water.
a. to waste b. wasting c. not wasting d. not to waste
12. If you _____ some salt to a glass of water, it _______and become part of the water.
a.& Disappear b.&will disappear c. will&disappear d. will& Will disappear
13. When I was in Italy last year, I ________ a lot of famous cities .
a. visit b. visited c. visits d. am visiting
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