7B    Unit 5 Water
重点单词：
Drop n.滴 ，v.落下    Chemical 化学制品    Vapour 蒸汽
Journey n.旅程    Through 穿过，通过    Form 形成
Quantity 数量    Pipe 管，烟斗    Stir 搅拌
Quality 质量    Valuable adj.贵重的，很有用    Continue 连续
Experiment n.试验    Bit 少量    Crystal 水晶，结晶
Fresh adj.颖的    Bank 银行    reservoir
Salt    盐    蓄水池
Voice 声音    Change 不行数n. 给的
Add 增加    Return 归还，回到
重点短语：
turn off 关闭    part of 局部
Turn into 〔使〕变成    pocket money 零花钱
.把···参加    (be) made up of 由··组成
a bit 有点儿〔要加上of 才可以修饰不行数    dry up 枯槁名词〕
重点句型：
1.Then it was time for sb. to ...到了做某事的时候了(59)
2.Remember not to...
3.How much water is ?
4.How much bottles of water are ?
具体讲解：
1.Listen to a story about the journey of a coin.(57)
2.when you exercise,you need more water.(58)
Exercise①为不及物动词，是“熬炼”的意思。
②可数名词：练习，体操
③不行数名词：熬炼，运动
3.two thirds.三分之二(58)
英语中的分数表示：分子用基数词，分母用序数词。分子大于1 时，分母要用复数形式。拓展：四分之几一般用quarter 表示，二分之一用half 表示。
如：四分之一：a quarter    四分之三：three    quarters

4.倍数的表达分数：〔68〕twice
（1）A+be+倍数+as+形容词原级+as B
如：my pens are three times as many as yours。我的笔是你的三倍
（2）A+be+倍数+形容词比较级+than B
如：my my pens are twice than yours。我的笔比你的多两倍
5.表示 every——“每隔··”的表达方法：
（1）every+基数词+复数名词：every four years 每四年
（2）every+序数词+单数名词 every fourth year 每隔三年
（3）每隔一··： every other +单数名词  every other line  每隔一行
6.辨析 through、over、across
三者都有“穿过的”意思
①over 是从物体外表上方经过，不与物体接触
例如：The bird flew over the river。鸟从河水外表飞过
②throngh 是从物体中穿过，
例如：The elephant can”t go through the gate.这头象不能从门里穿过。
③acrossg55 amg 从物体外表经过并且有接触
例如：The car is going across the brige    汽车正从桥上经过 7..So is this the end of your    journey？那么这里是你旅程的终点吗？ end n.末尾，结局
8.We use how many how much to ask about quantities.
use “用” use sth to do sth.用某物做某事人+be used to doing sth.某人习惯做某事
东风标致607
物+be used to do sth. 某物被用于做某事 如：wood is used to make paper。
9.Fix a迈克萨斯g50 dripping tap。修理滴水的水龙头。〔68〕
〔2〕

重点语法：如何谈论数量
我们可以用〔not)much, many, ora汽车a lot of, how much, how many等词来谈论数量，下面让我们一起来学习他们的用法。
一、many, much 与 a奥迪a4混动 lot of (lots of)
many, much 与 a lot of (lots of)三者意义一样，都有很多之意，many 修饰可数名词复数形式； much 修饰不行数名词；a lot of (lots of)既可以修饰可数名词复数形式；也可以修饰不行数名词。
There are many students in his school.
=There are a lot of /lots of students in his school. I need much / a lot of time to check the answers.
二、a few 和 a little
a few 意为“几个”，a little 意为“一点儿”a few 修饰可数名词复数形式；a little 修饰不行数名词. a few 和 a little 都表示确定意义。
I need a few apples and a little green tea.
There are a few bananas and a little bread on the table.途昂 有驾
留意：few  意为“很少”，little  意为“几乎没有”，few 修饰可数名词复数形式；little 修饰不行数名词. few 和 little 均表示否认含义。
There is little water in the glass.
Few students take the taxi to school at Green High School.
三、how many 和 how much
两者都表示多少之意，都用于询问数量。how many  后接可数名词的复数形式，how much