（9-10）（10-11）……（107-108）=？

解;NH4Cl ~ NH3
53.5 22400mL
x 2500mL
x=5.97g
NH3的物质的量=5.97/17=0.35mol
氨水中NH3的物质的量浓度=0.35/(100/1000)=3.5mol/L

新概念英语第一册第107-108课文详解及练习答案
课文详注 Further notes on the text
1．be in fashion,时髦,流行.
2．Would you like…?你愿意……吗?这个句型常用于表示委婉的请求或提议：
Would you like to go with us?你乐意与我们一起去吗?
3．as well,同时,也.通常用于句末.如：
He knows Spanish as well.他还懂西班牙语.
too与 as well一般不用于否定句,否定句中用 either.
4．Could you…?您能……吗?用于表示请求,比 Can you…?更加婉转客气：
Could you tell me the way to the post office?您能告诉我去邮局怎么走吗?
5．like that one,像那件那样的.
是介词短语,作定语,修饰dress.
语法 Grammar in use
形容词的比较级和最高级
（1）构成
A 大多数单音节形容词的比较级和最高级的构成是在其原级后面加上-er和-est：
small----smaller----smallest new----newer----newest
B 许多单音节形容词只有一个元音字母,其末尾为一辅音字母.在比较级和最高级形式中,这个辅音字母要双写：
big----bigger----biggest thin----thinner----thinnest
C 许多单音节形容词以-e结尾,如 nice.这些形容词只需在原级形式后加-r和-st：
large----larger----largest nice----nicer----nicest
D 有些形容词以-y结尾,而在-y前是一个辅音字母.这些形容词一般有两个音节.变为比较级和最高级时,-y要变成-i,末尾再加-er和-est：
easy----easier----easiest heavy----heavier----heaviest
E 但有少数形容词的比较级和最高级是不规则的,必须熟记,如：
good----better----best bad----worse----worst
F 大多数较长的形容词（即有两个以上音节的词）可与more连用构成其比较级形式,与most连用构成其最高级形式.
（2）用法
比较级只用于两者之间,通常与than连用.形容词比较级之所指假如很清楚,它也可独立存在：
This coat is longer.这件外衣较长.
最高级用于3者或3者以上.形容词的最高级在使用时必须加定冠词,并常伴有一个表示范围的介词短语或从句：
That girl is the tallest student in our class.那位姑娘是班上个子最高的学生.
词汇学习 Word study
1．compare v.
比较,对照：
The article compares the different features of imported cars on the market.
这篇文章比较了市场上进口汽车的不同特点.
Compared to our little garden,his garden seemed like a park.
与我们的花园相比,他的花园就像是一个公园.
2．suit v.
（1）适合；适宜于：
Finding a place that suits us all is very difficult.
找到一个适合于我们所有人的地方是很困难的.
‘One o'clock?That does not suit me.’
“1点钟?那个时间对我来说不合适.”
（2）相当,相当：
He would not be suited to the job.他不适合干那份工作.
Blue suits her.蓝色与她相配.
练习答案 Key to written exercises
Lesson 108
A
1 It is cool today,but it was cooler yesterday.
2 It is wet today,but it was wetter yesterday.
3 He's late again today,but he was later yesterday.
4 This test is easy,but that one is easier.
5 This bookcase is large,but that one is larger.
B
1 I am older than you are.
I am the oldest in the class.
2 I am taller than you are.
I am the tallest in the class.
3 I am lazier than you are.
I am the laziest in the class.
4 I am heavier than you are.
I am the heaviest in the class.
5 I am luckier than you are.
I am the luckiest in the class.
6 I am fatter than you are.
I am the fattest in the class.
7 I am thinner than you are.
I am the thinnest in the class.
8 I am bigger than you are.
I am the biggest in the class.
C
1 But that street is cleaner.
It is the cleanest street I have ever seen.
2 But that man is older.
He is the oldest man I have ever seen.
3 But that river is longer.
It is the longest river I have ever seen.
4 But that woman is shorter.
She is the shortest woman I have ever seen.
5 But that knife is blunter.
It is the bluntest knife I have ever seen.
6 But that car is cheaper.
It is the cheapest car I have ever seen.

课课练?题目拍上来
She is the tallest policewoman I have ever seen
I am the youngest in calss.
It is wet today in the class.
this is the largest dress in the shop.
%5:
doesn't fit.at all
very fashionable
warmer/.than