三、考点工具箱
1.基数词
表示“多少”的词叫做基数词。如one(1)，two(2)，three(3)，thirteen（13），twenty（20）等。
100以下的基数词
1 one 2 two 3 three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten
11 eleven 12 twelve 13 thirteen 14 fourteen 15 fifteen 16 sixteen
17 seventeen 18 eighteen 19 nineteen 20 twenty 30 thirty 40 forty
50 fifty 60 sixty 70 seventy 80 eighty 90 ninty 100 a hundred
21 twenty-one 25 twenty-five 58 fifty-eight
说明：(1)13～19均以后缀–teen结尾。
(2)20～90等十位数的整数均以后缀-ty结尾。
(3)十位数和个位数之间须用连字符“-”，如：
twenty-three(23) sixty-five(65)
fifty-nine(59) ninty-nine(99)
2．询问价格有如下几种方法：
①How much is/are＋主语……？
How much is the orange juice?
How much are these pears?
②What’s the price of…？
What’s the price of the house?
③What price is/are＋主语……？
What price is your new bike?
What price are these socks?
四、重难点密室
1．句子单数变复数，注意以下六要素：
⑴主格人称代词要变成相应的复数主格人称代词，即I→we，you→you，she，he，it they。如：
She is a girl. →They are girls.
⑵am，is要变为are。如：
I’m a student. →We are students.
⑶不定冠词a，an要去掉。如：
He is a boy. →They are boys.
⑷普通单数名词要变为复数形式。如：
It is an apple. →They are apples.
⑸指示代词this，that要变为these，those。如：
This is a box. →These are boxes.
⑹man，woman名词作定语修饰可数名词时，要在“数”上与被修饰名词保持一致。但其他名词修饰名词表示“性质”时，不作变化。如：
She is a woman doctor. →They are women doctors.
That is a pencil case. →Those are pencil cases.
口语交际
有关“购物”用语的总结：
(1)购物的需求
What do we have for dinner this evening?
What do we have in the fridge now?
There’s only a little bread now.
Can you go and buy…?
(2)告诉店员你想买什么
I want …, please.
I would like …of…, please.
Can I see…?
Could I have…?
(4)询问顾客想买什么及其数量
What kind would you like to see?
How many/much do you want?
(5)告诉顾客某物没货
Sorry, we don’t have any…here.
(6)挑选货物
How about the color/size?
It’s too small/big/short/long…
(7)询问和说明价格
How much is/are…, please?
