数词的用法 加减乘除教学文案

第33课

数词之加减乘除

算术式的读法：

※加法

1.在口语中的小数目的加法：用and代表“＋”号，is或are 代表“?号。如：

Five and three is (or are) eight.

5 + 3 = 8

What＇s seven and eight?

7 + 8 = ?

2.大数目的加法，或在比较正式的场合──用plus代表“＋”号，equals或is代表“?”号。如：

What does Two hundred and thirty-one plus a hundred and sixty-three equal?

(or: What is Two hundred and thirty-one plus a hundred and sixty-three?)

231 +163 = ?

※减法

1.在口语中的小数目的减法──可用以下两种方式：

方法一：被减数＋take away＋减数＋leaves (or is) ＋余数

方法二：减数＋from＋被减数＋leaves (or is) ＋余数

Four from nine leaves (or is) five.

or: Nine take away four leaves (or is) five.

9 - 4 = 5.

2.大数目的减法或在比较正式的场合──用minus代表“－” 号，

equals代表“?”号。如：

Four hundred and thirty-one minus a hundred and sixty-three

equals two hundred and sixty-eight, right or wrong?

431 - 163 = 268

※乘法

1.口语中小数目的乘法──第二个数目用复数形，等号用are 表示。

如：

What are three tens?

3 &#x D7;10 = ?

Five eights are forty.

5 &#x D7;8 = 40

2.大数目的乘法用times代表“&#x D7;”号，is或makes代表“=”号；在比较正式的场合用multiplied by代表“&#x D7;”号，equals代表“?”号。如：What does fifteen times two hundred and sixty-nine make?

(or : What is fifteen times two hundred and sixty-nine?)

15 &#x D7;269 = ?

15 &#x D7;289 = 4335

15 multiplied by 289 equals 4335.

※除法

1.小数目的除法有两种方式：

方法一：用divided by 代表“&#x F7;”号，equals代表“?”号。

方法二：除数＋into＋被除数＋goes＋余数──用于会话中。

Three into eighteen goes five.

or: Eighteen divided by three equals five.

18 &#x F7;3 = 5.

2.大数目的除法同方法一。

What does six hundred and sixty-seven divided by twenty-three

equal?

667 &#x F7;23 = ?

第34课

awake or asleep？

----只用于叙述的形容词

一. 放在联系动词或动词的被动语态后,解释主语的形容词,和放在动词+宾语后,解释宾语的形容词都属于形容词的叙述用法。

二. 形容词 afraid(恐怕), asleep(睡着), awake(醒来),alike(相似的), alone(孤单的), alive(活着的), apart(分隔的；意见分歧的)等只能（或多数情况下）作叙述用法。这些形容词一般不能直接用副词very修饰。

Hi, Mary, are you all alone by yourself?

嗨，玛丽，就你自己一个人吗？

You men are very much alike.

你们男人都一个样儿。

Hey, are you awake or asleep?

嘿，你是醒着还是睡着呢？

I doubt whether he is still alive.

我怀疑他是否还活着。

I am really afraid now.

我现在真的害怕了。

第35课

副词的位置与排列

一. 副词的位置

(一) 1.副词可以修饰动词,包括不定词、动名词和分词,通常位于被修饰的动词后面;修饰及物动词时,一般放在宾语的后面。

They walked slowly.

他们走得很慢。

slowly修饰动词walked。

The snow continued to fall heavily.

雪继续下得很大。

heavily修饰不定词to fall。

I enjoy driving slowly in the golden morning sun.

我喜欢在清晨金色的阳光下悠然地驾车。

slowly修饰动名词driving。

I enjoy walking slowly in the golden morning sun.

我喜欢在清晨金色的阳光下悠然地散步。

slowly修饰动名词walking。

We saw a boat coming quickly toward us.

我们看到小船很快地朝我们驶来。

quickly修饰现在分词coming。

Taken separately, they are easy to solve.